8 days ago my(M18) gf(F22) decided to go on a girls trip with 3 friends from Ohio (where we live) to the beach in New Jersey, she got a hotel she stayed with her friends in, and they went to go for lunch. First I want to say that every girl I've dated has cheated on me and I'm fine with it. My gf knows I'm okay with it and does it whenever she wants, sometimes sending me videos. Nobody except us two, knows that I know though. Anyway from what she told me, they met a group 4 guys when they went out for lunch and one of the guys dad owned a beach house with property on the beach. So they went to this guy's private beach, swam in the water, watched the sunset, drinked a bit. And all ended up fucking and hooking up. All the guys said they were single. 3/4 of the girls (my gf included) are taken, she just has one "single" friend, but even she is in a situationship. They're coming back in a few days, and have hooked up with other groups of guys throughout their trip. If anyone is interested in chatting about this sort of stuff. My DMs are open.