from a girls pov.
its not crazy...its called love or infatuation. sometimes even lust.
the head over heals thing.....what starts out burning hot, then that fast runs cold...keep it together, act normal, don't change too much. remember who she fell for...aaawww.see what i mean???
the best way to stay together, is to stay friends w/ benifits. seriously. i know someone for almost ten years now, we are the best of friends, can talk about anything and everything, go anywhere and do anything, have the greatest sex, and he is my best friend. good luck with your new found "friendship".
btw..she is cute...lets see some eye candy of you! he he he!! ;0)