<human>: I'm (19/m) in the military going through my training that's going to last at least another year and a half, and I'm interested in a (19/f) who is also doing her equally long training on this same base. We're just getting to know each other but she seems like she is interested enough, and this weekend we're going on a trip into town for the long weekend with my room mate (23/m) and a few others. My room mate is the issue. He's already an incredibly competitive person but not forwardly so, but he seems to use sexual conquest, lifting weights, and fabricated stories of excellence to validate himself. He will tell stories about having sex with his ex's best friend feigning regret but really I can tell he's bragging about being able to accomplish this. So some girl he knew from back home is coming out for the weekend and I've heard him talking to her online about how he loves her and such and such, but just today he was talking about how angry he is at her for some minor offense and now I can't help but think he's going to try and sleep with this girl I'm interested in out of the conquest nature of it. Any advice about what to do? Maybe I'm paranoid?

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<bot>: I think my room mate will try and sleep with a girl I'm interested in while on vacation, don't know how to approach it.