alexnash
Cuckquean content is underserved.
You can envision a million scenarios where your wife/girlfriend or whatever is forced to watch you with another woman.
Anywhere from catching you with her sister, and then joining in (or angrily directs you and the girl - "if you're going to fuck her, fuck her like I tell you")
Maybe some Swinger scenarios - You meet up with another couple and they'll convince you to swing. First you start with your own partner, and then you warm up to full swapping with some encouragement.
Perhaps some surprise scenarios or mistaken identity where you think you're with your partner, but it turns out to be her slutty sister or roommate
More femdom style scenarios - like girlboss needs to get off, so she uses you. Or your performance is bad, and she determines you just need to cum, so the first scene, she unzips you and dirty talks and soft degrades you while she jerks you off. When your performance doesn't improve, the next day, she steps it up etc.
Overstayed welcomes from a houseguest is a favorite.
Sex Therapist who takes liberties would be hot. Could start as couples therapy, and she suggests a solo session where she fucks you in secret. Then later your partner is there and is surprised at what you've been doing, but the therapist insists that this is good for the therapy and convinces her it's ok, and eventually into a threesome - maybe.
In the same vein as the last - you could have a girlfriend who doesn't wanna move too fast, so she hires a professional to help you get some of your bio urges out - but she doesn't realize how far it goes. She expects just an HJ or something, but the girl insists on more. When it gets to sex, your girl wants a condom, but a few minutes in, the other girl decides to pull it off, and your girl says only if you pull out. Eventually the other girl makes you creampie her and your girl is mad about it.
