A college girlfriend used to live in the same dormitory my son is a resident of now. But she had a very rambunctious roommate, who enjoyed watching and competing in all sexual exploits. So, if we started fucking, she’d kick off the blankets and masturbate for us, moaning and groaning and shouting words of encouragement like “fuck her harder! stuff that pussy!” Then later, when the roommate got a boyfriend of her own, she enjoyed having everyone fuck at the same time. Again, with the blankets kicked off and the lights on. And words of encouragement shared! So I don’t think it was so much getting caught in the act, as it was engaging in exhibitionism. But we never swapped partners, and at the time, it didn’t really seem that weird. But it did get to the point I’d tell my girlfriend, “let’s just stay at my place tonight, I don’t feel like putting on a floor show.” LOL.