Seriously, go ask for a Ladies Men cult invite, you'll get serious answers.
I was talking to a friend who was in the girls position last night. She said it was a good hook up and all, but this kid was super close friends with her and he spilled his guts about how he's always liked her. Now their friendship is super awkward because she didn't feel the same way. It's a tough call.
I wouldn't come on too strong, maybe invite her to do some things with you as a friend that only a couple would normally do, like be your homecoming date or something. A few drinks at a party could possibly loosen up the situation and let the truth come out from both of you a little easier, but don't treat it like you're drunk and just looking for a hook up. Hit up LM, you'll get lots of other peoples perspectives.