“My GF needs a daddy.”

I read the message again. Five words, but they suddenly lit up my brain.

I'd posted the picture and the message ages ago, but this was the first response. I had been in a low spot after the divorce was finalised and yet another misfire date.

Churchill called it his “black dog,” the depression that could take over your life. I didn't know if that was me, but lately I had been sinking into debilitating lows, energy-killing spells of overwhelming malaise, and the only way out seemed to be doing something crazy.

I'd reached out on a swinger site and left a picture that showed off my ‘talent’ and offered my services. But I'd pretty much forgotten about it. And now this. I typed a response, thrilled at the idea of being what they wanted. “When, where?”

…

The ride up on the elevator was the last chance to gather my thoughts. What exactly was I playing at? I hadn't allowed myself to examine just what I was doing; I had just let the tide take me to this spot. Maybe this still wasn't the time to contemplate. I was perhaps ten minutes away from fucking some guy's girlfriend while he watched.

Just thinking it out loud sent a pulse of excitement through my body. We'd chatted by text, and I was fairly sure what they wanted. I'd talked to them both, together and separately, and they'd both seemed enthusiastic. When it came to the crunch, though…

Kirsty, I don't think that was her real name, had been messaging me; she'd sent me a couple of pictures. Just 22, exactly half my age, she was a brown-haired, petite thing, all big eyes and tiny tits, but, judging by the messages she sent, anything but shy. Bill, surely not his real name, had let me know exactly what his fantasy was.

The question was, could I play the part? It wasn't in my nature, but the thought of this scenario had turned me on in unexpected ways.

I knocked on the door, and Bill answered. He invited me in, where Kirsty waited in the hall. She wore her brown hair in pigtails; she wore an oversized Foo Fighters tee, too big even to be Bill's, and over-the-knee striped socks. Dressed for the part, I thought. Bill offered me a hand, which I ignored. The performance had begun. I walked right up to Kirsty, my heart rampaging in my chest, and cupped her face in one hand. Her eyes were wide and alive, so I bent and kissed her lips for a long few seconds. I guessed which door led to the living room, turned her around, and guided her there with my hand at the base of her neck.

The room was larger than I thought it would be and stylishly decorated. Dark wood floors, a dark leather three-piece, a huge TV, and framed movie posters on the wall. Bill followed, and I pointed him to an armchair.

“Sit there… You, Sit on his lap. Kiss her. Say goodbye to the girl you used to know; she's about to become something else.” I commanded, in a flat voice.

What the fuck did that mean? Sounded cool as fuck, though.

I didn't let any of the nerves or doubt I felt show on my face as they did as they were told. I saw a lingering look between them. This wasn't on me. This is what they wanted.

“Last chance.” This was the only time I intended to break the performance. Literally their last chance to express any indecision or doubt.

“Do whatever you want, Daddy.” Kirsty said, while Bill remained silent.

Kirsty made to stand up.

“Stay right there.” I told her, my hands reaching to unbuckle my belt.

I walked to the couple and freed my semi-hard dick. My heart was in my mouth, hardly able to believe what was happening; it was almost an out-of-body experience. I was literally towering over them both, Kirsty still on her boyfriend's lap.

“Ready to get a good view of this bitch sucking a real cock?” I asked him, wincing internally at the derogatory moniker.

It wasn’t in my nature to be like this, but I felt liberated; I felt released, granted permission to let a hidden part of me out of the box. I put my hand around the back of Kirsty's head and guided her to my eager cock. Her mouth enveloped me, just inches away from her boyfriend's face. She began noisily sucking up and down my shaft, her boyfriend silently watching as my dick disappeared into her mouth. I grabbed a fistful of one pigtail and pulled her head off my glistening cock.

“Kiss him again. Tell me, Bill, does she taste different?”

I almost laughed at the confusion of expressions that passed on Bill's face before and after she kissed him. She thrust her tongue into his mouth that was just seconds ago wrapped around the tip of my cock; he looked appalled, embarrassed, but keen.

I stepped back and gave Kirsty room to stand. I kept her at arm's length.

“Take her tee shirt off for me, Bill.” I commanded.

Her eyes never left mine, and a wickedness pulled at the corner of her lips as her tee was pulled over her head from behind. Her small tits barely jiggled with the effort, but her nipples were visibly hard and inviting. I scanned down her body, pale flesh, firm and youthful, shallow curves of a boyish figure but gloriously sexy and enticing. A trim, dark triangle, exposed by her lack of panties, looking more enticing still, but I held back from moving toward her as my body urged me to.

Instead I told Bill, “Squeeze her tits for me, Bill; get her nice and excited for me.”

Her eyes briefly dropped down to watch her boyfriend squeeze and tweak her nipples, but soon met mine again, even hungrier than before.

“Open her legs Bill, tell me if she's wet for me.” He parted her thighs tentatively and ran a finger up her slit.

“Yeah, she is.” He mumbled.

“Yeah, she is… sir.” I told him harshly.

His eyes flashed in a small burst of anger that thrilled me unexpectedly.

“She is… Sir.” He added reluctantly.

I curled a finger to Kirsty, telling her to step closer. I let my hands find her hips and leaned in close, as if to kiss her, but brushed past at the last second, so I could whisper in her ear, leaving her wanting.

“Soon I am going to fuck that tight little pussy of yours. I'm going to make you feel like no man ever has, but first, turn around.”

She did, and I wrapped my toned arm around her chest possessively. A head or more shorter than me, I could see over the top of her and watch Bill's expression as my other hand slowly crept down her abdomen and towards her expectant pussy. She was indeed wet, soft, and slippery. I let my fingers explore her, my head bent to kiss and gently bite at the nape of her neck. The first whimper escaped her, and it made my dick pulse against her lower back.

“Take me to your bedroom.” I breathed into her ear. “Yes, Daddy.” She purred, spinning into my chest.

She looked up at me. It looked like she wanted to say more, but nerves, or awkwardness, or embarrassment held her tongue. I reached down and gripped one buttock, squeezing encouragement. She took my hand and led me from the living room. I turned and beckoned Bill to follow.

Their bedroom was nice. Big enough for a sturdy oak-framed bed, matching wardrobes, and a vanity desk, complete with an oval mirror. It even had a cushioned stool in front. I pulled the stool to the corner of the room and pointed Bill to sit there. The sheets were dark and silky and rustled slightly as Kirsty perched on the edge, facing away from her boyfriend. I nudged between her thighs and kissed her, for the first time enjoying the feeling and warmth of her as more than an object. I sunk into the kiss, letting myself feel her smooth, soft skin against mine. I could feel the pull of loneliness ebbing away and tried to snap myself out of it. I wasn't here to make love; that's not why they wanted me here.

“Turn around, hands and knees. Look your boyfriend in the eye; let him see you enjoy this.”

With a quick “Yes, sir.” She spun and presented me her pert round ass and a view of her shaved pussy and tight arsehole that stopped my breath.

I liked the “Sir” more than the “Daddy,” but she could have called me whatever she liked right then.

I crouched and buried my nose between her cheeks, letting my tongue have free rein to explore, tease, and tickle wherever it could reach. She tasted sweet and hot, and it brought back nostalgic waves of my youth with my now ex-wife. I used my hands to steady her bucking hips, holding her still where I could bury my face deeper still. I ran my tongue from her clit and didn't stop till it was circling her rim. I pushed as hard and as far as I could into her and let myself wonder how her expression would have changed at this taboo, what that would provoke in Bill's imagination.

“Oh God…oh fuck…Oh Daddy, Daddy, I'm cumming…”

Music to my ears, and I redoubled my efforts around her lips and throbbing clit until my mouth was filled with the flow of her orgasm. I stood, catching Bill's eye and wiping my mouth with my forearm. I stood close behind her and let my cock swirl at her entrance, allowing no more than my tip to gently stretch and tease between her lips.

“Look at him. Look at your boyfriend. Tell him that you love him.”

Kirsty was damp with sweat, red-faced and breathing hard.

“I love you, bab-eeeeuaghh!”

Her sentence was cut off as the feeling of my cock stretching her open, my length plunging into her in one long slide, overwhelmed her. I gripped a ponytail in each hand, lifting her head to face Bill, letting him see the ecstasy on her face.

“Tell him again.” I urged her as my pace increased, rocking her back and forth.

“I love you, baby…God. Fuck. Baby, I love…”

Her sentence descended into moans and squeals as my thrusts stoked her towards her second orgasm.

“That's it, you're my girl now. Cum for me; cum on this fat cock like a good girl.”

Her pussy gripped and spasmed around me as she held her breath against the overpowering cascade rushing into her. She let it go with a guttural growl that did nothing to slow my pace.

“Why are you looking away?” I called to Bill on his stool. Look at her; watch how she cums for a real man.”

I thought I could see tears welling up in his eyes. This wasn't my idea, I reminded myself, but soon the raging lust took over again.

“Do you want this cock in your ass like a really good girl?” I asked Kirsty.

Out of the corner of my eye, I noticed Bill sit up straighter.

“Yes…yes, Daddy, put it in me…please.”

I don't know why I'd asked. Kirsty had been very enthusiastic about the night throughout her messages to me, but this hadn't been discussed at all. But I was swept away with it all, it was too late to overthink now.

I rolled her onto her back; I wanted to see her face, watch her expression change, and watch for her signals whether to slow down, go gentle, or…not. I thought about turning us around, getting up in a squat, and letting Bill watch me penetrate his girl's ass, but I decided his imagination could be his enemy. I looked down at Kirsty. Her eyes were searching me, nervous but excited, her lips parted, and she breathed deeply. I flipped her legs over my shoulders and leaned over her, letting the tip of my cock nudge into her hole.

“Lube?” I mouthed to her.

She shook her head, reached down, and slid her fingers into her pussy, bringing them out, wet and shiny. She worked her wet fingers around my head and around her tightest hole, punching one, then two fingers into herself. She gripped me and steered me into her. Her eyes were wide and expectant as I started shallowly teasing her, stretching her carefully. I tested her further, pushing against her tight resistance. Her eyes screwed shut and her breath puffed her cheeks. I rocked into her still further, and her hands went to my hips, a handbrake ready to stop my momentum. But she relaxed; she became accustomed to my size and began to move her hips into me herself, greedily asking for more. We no longer had eyes or thoughts for Bill. In this most intimate act we were one. Or at least it's how I felt as her eyes penetrated me as deeply as I penetrated her.

I was lost in her dark eyes and let the pleasure of being inside her take me. I could fall in love with a girl like this. But that wasn't the deal; she wasn't mine to fall in love with.

I felt a spiteful streak run through me and began to fuck her ass in earnest. I gripped her calves and pushed them, folding her in half and giving me the best view of my cock being devoured by her tight ring.

“Fuck, but she's tight, isn't she, Bill?

Bill? I'm asking you a question…Her ass is tight as fuck, isn't it?”

“I wouldn't know.” He snapped sulkily.

“I wouldn't know…Sir.” I reminded him but didn't push for a response. Fuck, this was bad for him.

She almost giggled but it turned into more breathy moans and sighs as I continued to pound into her. It was time. I genuinely wanted to leave; the atmosphere had changed, even if Kirsty seemed oblivious in her desperate state of delirium. Fuck it, though, one more humiliation. I'd been waiting for this. I stood and lifted Kirsty with me by her hand; I walked, and she tottered over to where a visibly seething Bill sat.

“On your knees.” I demanded, pushing her shoulders down, positioning her just so in front of Bill.

“Open your mouth, tongue out.” She looked incredible as she did as she was told, waiting in anticipation. I took myself quickly to the edge.

“Look at him.” I stuttered, nearing the end. “Watch, don't you look away…” I addressed to Bill.

With a grunt, I let loose the first thick jet of cum, shortly followed by the second that streaked sticky, parallel lines from her cheek to her chin. I continued to pump out a torrent of cum that pooled on her tongue, but the couple never broke eye contact. As soon as she judged me finished, she closed her mouth and gulped hard. I was about to really rub it in and tell her to kiss him again, but he suddenly stood and stormed from the room, leaving Kirsty and me in an awkward, stunned silence. I sat heavily on the bed, satisfied sexually but confused emotionally.

“You better leave.” She suggested.

“Is everything going to be ok here?” I asked.

“Sure, give him a couple of hours, and he'll be all over me, trust.” She laughed softly.

“You good?” I asked as I pulled my trousers back on.

She suddenly came over and hugged me, her still sticky face pressing into my chest. She held me at arm's length.

“That was amazing; you were amazing! But this was a one-off; you understand that, right? I honestly had the most incredible time, but we'll be blocking your number, ok?”

I knew the score; I'd been expecting it, but I still felt a loss for something I'd never actually had in the first place. We said our goodbyes at the door, Kirsty and I, Bill was nowhere to be seen. As I descended in the lift, so descended the “post-nut clarity” shame spiral. I mean, what was I doing? Half my age. Acting like a cunt… fuck.

I stepped from the lift and bumped into an old fella coming the other way with a lead in his hands. We mumbled our apologies, and then I looked down and spotted the black dog.