The first time my partner had sex with another guy was a pretty intense roller coaster of emotions for me. We’d recently opened up to playing with others, but aside from her making out with another guy while I was present, she had yet to do anything on her own. Then one day she told me that she’d been talking to a guy, and wanted to go on a date with him. It took me off guard a bit. I knew it was coming, but I still wasn’t sure how I’d handle it when the time came. And here it was.

I could tell she was excited, watching her text him and the things she said reminded me of when she and I had first started dating. The was an obvious sexual chemistry between the two of them, and after seeing pictures of him I knew they'd look hot together. She's a petite alt/punk style girl with short colored hair, lots of tattoos, piercings, slim waist and a big butt. He was, by contrast, a personal trainer, and fairly type A. Tall, much taller than her, very fit, former collegiate athlete type. They flirted back and forth quite a bit, she was the one pushing things and she wasn't subtle. They swapped pictures, but stopped short of nudes

The date came, I watched as she picked out clothes and could tell she was nervous/ excited. She wore underwear that we both thought was cute (lacy black thong and matching bra) and thought about wearing a super short dress, but her shyness won her over and she ended up going with a nice fitting pair of jeans, cute sweater, and chuck taylors. She joked that she still wasn't sure he was going to even get her clothes off. Somehow, her dressing like she was just going out for a normal coffee date made it even hotter for me, the idea that she would, to all the world, look like a normal girl just out on a date, and no one would know what was really going on.

I was pretty nervous though. I did think it was sexy that she was this excited, but I had second thoughts, and I wasn't sure I wanted her to go through with it. I wasn't worried about her leaving me for him, we had a strong connection. And we'd played with others before, I'd even had sex with one other girl in a threesome we'd had months before. And I think that was the main thing that stopped me from voicing my concern, I didn't want to be a hypocrite.

She kissed me, asked me to wish her luck, and then she was gone. She texted me when she got there, and promised to check in throughout the night. An hour went by, then two. I was feeling pretty anxious. I tried to distract myself by working out. I watched porn, that didn’t help. I put on a movie, but I could’t stop myself from checking my phone every thirty seconds. Then I got a text.

They were having a really good time, he was cute, and funny, and was into her. And she had a question. She wanted to go further, and she wanted to make sure that I was comfortable, and what I was comfortable with.

So I told her to go for it. She had my full permission to not worry about me and just "do what she wanted.”

She thanked me, sent me a kissy face emoji, and that was the last I heard from her for the next few hours. I still checked my phone often, even though I knew she hadn't texted back yet. My being was a confusing mess of emotions, horny and nervous, and extremely jealous. My pride forced me to suppress my jealousy, so I didn't voice it. After all, I was the one who had given her permission, and encouraged her every step of the way. It was too late to back out now.

This part, the waiting, was one of the things that made it so intense. The knowledge that my cute girlfriend who I shared an apartment, bed, and a life with, was off potentially doing dirty things with someone else, drove me crazy. Up until this point, this hadn't been a kink for me. At least not one that I'd acknowledged, to anyone else, or even myself. I was just doing "what was fair.” I got to dick down another girl, with her blessing, she gets to fuck someone else of her choosing. Fair enough. But sitting there, waiting for her, with my brain involuntarily conjuring up images of what they might be doing together, had me shaking. And all of these intense emotions combined, to create one of the most intense sensations of arousal that I’d ever experienced. I wanted her so bad. I fantasized about how I would jump her as soon as she got home, carry her off to my bed and remind her who fucks her right. That was the night that I learned how much of an aphrodisiac jealousy can be, and I was hooked after that

She finally texted me, she was on her way home. It was 3:00 am. I knew for sure they had been fooling around, what else could they have been doing for that long? But she was coming home now, maybe they hadn't fucked. I know my girl, she likes to go multiple rounds. The first time she and I hooked up we basically spent an entire three day weekend in bed, only coming up for scavenge for food and water. Sex with her is rarely a quick thing, an hour is required minimum. But now I looked at the time again, her last text, asking for permission, had been four hours ago…

She was happy to see me when she got home, excited, almost giddy. I was sitting up in bed, she sat with me, still in her clothes. We embraced, and kissed. She was warm, and held me tight. I heard and felt her breathing, ran my hands up and down her back, smelled her. Did she smell different? Was that an unfamiliar scent layered just over her shampoo? I ran my hand under her shirt, and felt the smooth, firm skin of her back. Her shirt felt a little looser, as though it had been pulled on. Or was that my imagination? She stood up to take off her jacket and hat (it was winter).

I asked her how her date was. She smiled and said "so, so good." As she took off her jacket and sweater, now I could see a small dark blue bruise on the side of her neck. She saw me looking, and asked if she had any marks on her neck, I took a picture and showed her, she laughed. He had been pretty excited, she told me. She looked off at the wall for a second, quietly thinking about something. Finally she spoke and said, “So…. We had sex.”

My breath caught in my throat. So it had happened. How was I supposed to react? How did I want to react? I still wasn’t sure. “How was it?” I asked. She looked at me. I cleared my throat. “The sex.”

She hesitated for a moment, then asked what I wanted to know. Everything, I told her. It felt surreal to ask my girlfriend what it was like having sex with someone else, but in that moment I wanted nothing more than to know what they had done together. I waited, my question hanging in the air. She closed her eyes, as if remembering. A smile crept over her face, she sighed happily and said “it was good.”

They started at a coffee shop, then he had the idea to wander over to a video game arcade, which she thought was cute. Neither one of them are huge arcade rats, but that hadn't been the point. They were soon making out heavily in a back corner of the arcade, he lifted her up and put her on a machine, she liked that. He was strong, she could feel his muscles under his shirt. At this point an embarrassed arcade employee came and asked them to stop, which she thought was funny. This was when she texted me for the last time before her four hour gap, asking for permission to go further.

She said she felt like a teenager again, looking for a place to makeout with a boy. She didn't want to bring him back to our apartment, he had already said no to a threesome or me being involved in any way. And though he was twenty five years old, older than my twenty one and her twenty two, he was currently living with his parents. They ended up in his car, and drove to the roof of a parking garage. They made out for a while in the front seat, hands wandering but clothes mostly still on. Shedding winter clothing. But they were interrupted by a security guard, which in hindsight is still kinda funny but that the time she was annoyed. They left and drove around for a bit, and ended up finding a dark parking lot with a broken light. The car was hidden in the shadows with the lights off. It was perfect. They jumped right into the back seats this time. It was well past midnight, and neither wanted to wait any longer.

I pulled her towards me as she talked, so that her back was leaning against my chest. I reached around her body, and ran my hands over her stomach, then one hand up to play with her breasts, one hand down to unbutton her jeans. She smiled and paused her story, looking back over her shoulder at me. I told her not to stop.

Once she could see how turned on I was, she just started telling me everything. I could tell it turned her on too, her smile never left her face while I touched her and tried to feel every part of her again. I could see a lot more bruises as I removed her clothes. On her neck, the upper slopes of her breast, hand shaped bruises and broken blood vessels on her ass. She has a high pain tolerance and loves being spanked hard.

They made out in the back seat of his car, hot and heavy. She pulled his shirt off, ran her hands up over his abs. He pulled her top off, massaged her breasts over her bra. She pulled her pants off and climbed onto his lap, straddling him, now just wearing the lacy bra and thong she'd shown off for me just before leaving. It was cold in the car, and she rubbed her breasts and stomach against his bare chest for warmth, wrapped her arms around his neck and held him tightly while she rubbed her pussy on him through the thin fabric of her panties, and the rough fabric of his jeans. She reached down between them and struggled with his belt, needing to find out what was underneath. She wasn't disappointed.

He lifted up, pulled his jeans and underwear off with one go, his swelling cock flopped heavily onto his stomach as he laid back lengthways across the seat, his head resting against the fogged car window in the cramped space. She climbed over top of him, taking a moment to look over his fit body, illuminated faintly by a distant street light. She loved the look of need and lust of his face, and she loved how hard his cock was as she reached down to tease his shaft with her fingertips. He was long and thick, thick enough that her fingers didn't quite touch as her small hand wrapped around him and began gently stroking. She leaned over him a kissed him gently, then kissed his cheek, his jawline, then his neck, down to his chest, his abs, until finally his cock was right in front of her face.

She did the same to me, while describing what she had done to him.

She teased him a bit, stroking him right in front of her face, looking up and liking the control she had over someone so much bigger and stronger than her. He was a full foot taller, and almost a hundred pounds heavier. She kissed the underside of his cock, stroking his balls gently, and finally took the tip in her mouth. She was able to get a little more than half of him in her mouth, really trying, and used her hand for the rest. She could tell by the noises he was making that he liked it, but her pussy was aching from need.

She climbed back up and kissed him hungrily, stroking him harder and more desperately now. His fingers pulled her panties to the side and played with her clit, finding her soaked, and he slipped a finger in, testing the waters.

She lowered her pussy down on his cock, rubbing her labia on the underside of his shaft, grinding and rubbing her wetness on him. He grabbed her ass with both hands, slapping her cheeks hard, digging his fingers in the get a firm grip.

She stopped talking for a moment, and looked away as though embarrassed. I asked her what was wrong. My cock ached in her hand as she stroked me gently. She continued.

She rubbed her pussy on his bare cock, becoming increasingly dick drunk and desperate to feel him in her. She was wet, and very warmed up. His tip teased her opening, she felt it rub and then poke her. She moved away, ever so slightly. She should get a condom, she thought. But he reached up and kissed her, and all thoughts went out the window. This time when she felt the tip of his cock, instead of moving away she pushed down, and the tip slid inside. They both gasped, and he thrust up into her, pushing farther in. They froze for a moment, just feeling each other. Then she slid down further. It felt so good, she didn't want to stop.

She and I never used condoms, she was on birth control and honestly we both liked it better raw and when I came in her. I used a condom when we had our threesome, and we had agreed that she should probably use one on her date tonight, if it went that far. All of this went through her head as she began to ride him. Just a few strokes, she told herself. Just a minute, don't let him cum in you, and then get the condom. But that minute turned into two, and the whole situation was so hot, she later admitted that she liked how slutty she felt, fucking the guy she just met bareback while her boyfriend waited for her at home. And he felt so good, she was wet and they were moving together easily now, her taking him all the way down on each stroke, their flesh slapping where it met. She kissed him hard, and breathlessly asked him, "Are you clean?”

He nodded, and said he had gotten tested when they set their date. He hadn't said anything because he didn't want to assume she would fuck him. Good enough for her.

She rode him harder, and she could tell he was getting close. His eyes were squeezed shut, his big hands tight around her little waist, lifting her up and pulling her down harder to meet his hips as he thrust up into her. He had been breathing hard, but now he looked like a sprinter about to cross the finish line. She knew what she should do, but she also knew what she wanted to do. She pushed her hips down harder, leaned forward to whisper in her ear and said "cum for me." The muscles on his neck stood out as his whole body tensed, his fingers dug into her hips so hard they left bruises on her fair skin, bruises I later saw, and she could feel his cock flexing and pulsing as he groaned and pumped his orgasm into her. She lay on top of him, shaking in the intense afterglow, feeling his rapid heartbeat through his chest and his breath ragged as his body still spasmed, even now as he came pushing his still hard cock deeper.

They stayed like that for a moment, she gently kissed him and he stroked her back gently with his fingertips. She expected his cock to go soft after such an intense orgasm, but it didn't. In fact... She felt him start to gently stroke in and out of her again, her hips responding almost out of reflex. She could hear the wetness of her pussy in the quiet car as his cum leaked out around them, mixing with her own renewed arousal.

He tried to pick her up and put her on the seat so that he could be on top, but that car was cramped, and they both laughed as they separated briefly to reposition. As he sat up, she leaned down to suck their juices off of his cock, something she loves doing to me. As she bent over she could feel his cum running down the inside of her leg, and for a moment she wondered how I would react. She thought about me at home, waiting to hear about her night. Then she turned around so that she was on her hands and knees, ass facing him, looked back at him over her shoulder and said "come fuck me.”

They fucked for a long time, he came two more times and she came three. She's one of those lucky girls who can cum from penetration alone, and she told me that the whole situation made the sex unbelievably hot for her. She liked how strong he was, even after she was already exhausted, she could just relax and let him do all the work. This was pure sex, a rough hookup between two strangers, who were just using each other’s bodies to get off. She remembers one moment, him pounding into her from behind, and she put her hand on the glass to steady herself, smearing handprints in the moisture, laughing to herself about that old car sex cliche. She remembers the third time he came, her lying flat on her stomach, legs together, his hips making her asscheeks bounce as he held her down by the waist and pounded into her from above with an almost desperate pace. He was so heavy and strong that she wouldn’t have been able to move, even if she wanted to.

They cuddled for a little while afterwords, just talking. They had spent about six hours together at this point, and hadn't spent much of it talking. She finally checked the time, it was later than had she thought it was. She kissed him and asked him to drop her back at her car. They dressed, and on the ride back home she could feel their mixed juices soaking through her panties.

At this point in the story she and I had been fucking gently while she tells me all of this, me resisting the urge to fuck her sore pussy any harder than I already was. I didn't mind that some of the wetness I felt was from her date. She liked how turned on I was by what she had done. We both felt dirty in the best way, and both of us knew this wouldn’t be the last time we did this.