i think if you've been FB's for couple of months na either one of you will develop feelings. Most often than not women tend to fall for that guy first.. I'm no believer of pure-lust-alone-thingy cuz for us women sleeping with a man creates some sort of feeling unfortunately (I'm not generalizing) some guys can really create a boundary between lust alone and love. As what they say women can fake orgasm but men can fake a whole relationship!(just for lust)