Long story short, I usually invite my friends over once a week for movie night. Sometimes, one of my female friends brings over her boyfriend, and whenever she does they'll always make out on the couch and I find it quite disgusting when they're all over each other. I don't have a problem with it at all when we're elsewhere (i.e. movies, mall, etc.), but it's a bit uncomfortable when they're on MY couch (or more specifically my parents' couch). The couch always feels a bit contaminated after they leave as well.
Should I say something? Am I valid in my concern? Am I just being prudish? Help please?
PS- I'm single and never had a girlfriend, but I've kissed girls before so I'm not jealous. But I know they're going to bring that up against me if I say anything.
Should I say something? Am I valid in my concern? Am I just being prudish? Help please?
PS- I'm single and never had a girlfriend, but I've kissed girls before so I'm not jealous. But I know they're going to bring that up against me if I say anything.

That's..... not normal.
I don't think the couch is contaminated though, give them a few years to put sex stains on it and then your concerns will be valid!
But seriously, you should probably get them to stop.
Stop inviting them over if they aren't willing to comply.
Personally, I'd tell them to get the fuck out.
2. Yes, you could leave the room, but imagine what things they may do on your couch.
Leaving to give them "privacy" still doesn't take of your problem. Until, they can learn how to act while they've been invited to your home, you should stop inviting them over. Hopefully, they'll catch on eventually.