\I say accidental because I was about 75% through this when I realized everything I was describing is essentially just a cuckold scenario! Well, I hope you enjoy.*

Intro

This prompt is about jealousy in its many forms, of you being jealous of the girl who's skinnier, has bigger breasts, whose more confident in her sexuality, who fucks better, or who sucks better...Or it's about being jealous of your friend/roommate, of the girl he hooked up with that is hotter than yours or did things yours just wasn't willing to do. Maybe you're jealous of him being taller or more handsome or of the way girls react to him.

Jealousy and the need to prove yourself can make you do weird things like want to fuck who they fuck to have what they've had or to show that you measure up. You're willing to degrade yourself or do things you wouldn't normally do to prove you're sexy too. Jealousy can make you realize that you really aren't equal and want to worship what's superior just to be a part of something great.

That's all pretty vague and ambiguous so here's an example:

Prompt

[This works equally well with couples of all ages, maybe on a trip or something too). College dorms don't leave much in terms of privacy. Sam and I were randomly matched as freshmen in college and came to a quick understanding that our priorities here are the same. We're here to get degrees, sure; but that's not that hard. We're really here to hook up with girls, and we can't waste the mental energy worrying about privacy.

That means there have been plenty of times when we're both with a girl at the same time and plenty of times when it's just me. There are those us who fuck the same if someone else is in the room. I'm confident in myself and honestly don't care what others think. I'm more focused on the girl I'm with. If anything, I like having someone watch because I know my partner and I are hot and like showing off.

Then there are those like you who fuck differently when there are others in the room because you are only too aware that others are seeing you naked and seeing what you're doing and how you're doing it. You're competing, trying to be as sexy as them and measure up as best you can, but at the end of the night, you're enjoyment of what your sexual experience is dwarfed by thinking about that other couple because they were hot. They had the best bodies. Their moans were fucking hot. They moved so gracefully. He knew what he wanted and took it, and she wasn't afraid to

You

So who are you in this scenario?

Are you the girl thinking about your friend who got to go home with the hot roommate wishing she could be like her and wishing she could get fucked like that? Or are you the girl disappointed by her partner, by his size or how long he lasts or that he fucks like a bitch while you need to have your hair pulled and your pussy pounded by someone who knows how?

Or are you the guy jealous of his roommate wishing you knew what it was like to have a girl like that on her knees and moaning into your cock, wishing you had a cock girls would want to suck that badly. wishing you weren't a disappointment?

I'm opening this prompt to everyone. Here are some ways I could see it going depending on your kinks

As the girl:

1. After your partner finishes early leaving you unfulfilled, You eventually can't stand watching your friend moaning in pleasure any more and come over trying to get involved. Depending on your kinks, we could be happy to involve you showing you how good sex could be.
2. Or we could be more reluctant to the point of shaming you but still let you join. My partner/your friend may take breaks to watch, comment on your body, laugh at how awkward you are, and make you lick her perfect pussy while I fuck your fat ass. I might pull out every time you get close to cumming because we're having too much fun torturing you.
3. Your friend is everything you wish you were and want to suck my cock so you can taste her and please the cock that pleased her. Or maybe you want to have what she can so casually get by fucking me. It would take convincing, but I'd agree to a pity fuck. There's something satisfying about a pathetic girl who begs willing to do whatever I ask.
4. Or I'm your partner. You don't know how you landed such a catch. No one does. The fact that you're not deserving is reinforced every time you see me staring at prettier girls, how you have to beg to get any action from me, with the way I close my eyes imagining other girls when we fuck, how the girls I say I like look nothing like you. When your best friend visits and you pull my pants down to find her red lipstick on my cock, you are crushed but surprised how wet it makes you. I knew you'd see it and didn't stop you. Instead of starting a fight, you dutifully lick your friend's juices off my cock and pleasure yourself later thinking about us fucking behind your back.
5. Your partner really just doesn't do it for you. It's sad really. You love him. He's great in so many ways, but he doesn't satisfy you and you need to be satisfied. Thankfully I'm his friend, I am flirt. I can't help it. It's bad. And your partner doesn't say anything when you flirt with me. He sits by passively while I put my arm around your shoulders and rub your thighs. He does nothing even when we disappear to another room in the house for 20 minutes and you come back with your hair in a mess and give him a kiss smelling like my cum.

As the guy:

1. Maybe you try to have sex with the girls I've hooked up with getting off to the fact that I've been inside her too.
2. If you bring back a girl while I'm there, maybe it's hard for you to perform if I'm in the room too. You know you just don't measure up and it kills your confidence. I would offer to come over and help out. Having me fucking your girl too takes the pressure off
3. Maybe you also kinda like that I'm naked and hard and fucking her with you too. You have no problem making out with a girl who was just giving me head or taking my sloppy seconds by licking or fucking her stretched pussy dripping with my hot cum. Her disappointment at your size and what you're trying to do is evident, but for some reason makes you even harder.
4. Ditto #4 under "As the girl:" but you're the guy whose partner gets more and more obvious about fucking a superior cock. The only sex you have with her now are the pity fucks after she's been stretched and filled by me. You don't get the same moans of pleasure that you hear when she's with me. It gets to the point that she wants you to watch and makes you show some gratitude by licking both of us clean when we're done like a human cum rag.