Pretty sure you're thinking of Gangs n Whores, which hasn't been worked on in a long time.
Thread here:
https://legendofkrystal.com/forum/viewtopic.php?f=37&t=4409&cache=1
More content and of a higher quality than most things in the showcase. It'd be nice if it didn't just boot to menu after you were done, though. Maybe have some kind of after menu with all the scenes?
Alright, I found the issue. My character's dick was too big. For anyone who else who wants the scene it's under Share, then Fuck Her, your dick has to be under 30cm I think.