okay dude seriously.
if this chick just randomly started being all touchy-feely on some random ass day, she's looking to get laid, not find someone to commit to.
not saying you should just tell her to piss off, if you wanna go down her road too and just forget around, be my guest, just don't be a dumbass about it and knock her up.
or if you want to wait until a commitment arrives, tell her to piss off and find someone else.
that or you're 12 and this is all horsestuff.