Most Helpful Guy
Well, first of all, a guy wanting a girl as an friends with benefits is not rejection. That's sexual attraction, just without an attendant personal connection. A lot of people like having these relationships to quell their sexual desires. It can be hard to find someone to get serious with, and lots of people don't want to go all that time without sex.
A guy might say anything to you, including just straight up asking you if you'd like to have a sexual relationship. If you're worried about maybe getting played, ask him what he wants. If his answer doesn't pass the smell test, leave. Don't play around with a guy who's being dodgy about what he wants. Adults should be honest about what they want, even if they just want to get some pussy (or dick).0