2 girls are coming to visit me and my girlfriend in a couple of weeks. They're her friends but also kind of my friends. We all met while travelling and we were sharing a room for 1,5 months. I've kissed one of them, and the other one we always had sexual tension and she admitted to being attracted to me more than to her boyfriend, but I was dating my girlfriend already.

I've seen both girls almost naked, I've seen them have sex, they've been in the room while I had sex. Obviously behind bed sheets but still. There's a lot of comfort there.

My girl is not open to any threesome or smth. She doesnt wanna share. I don't know about the 2 girls, haven't seen them in a while.

Is there any chance to augment the likelihood, or it's probably not gonna happen?