Ha, I like that pic. Sadly, girls are one of the craziest creatures on the face of the earth. However, assuming that you didn't lead her on and promise her things like a relationship, she should, at least eventually, accept that it was just about the sex. I mean we can be blinded by "love" but we aren't stupid. She can't honestly think that something will come of an encounter like that unless she's 15 or on meds. Good luck.
Like Nicki said, women are nuckin futs!! I hate to laugh at you, but you should know better. It's one thing to have a one night stand but from Myspace.... c'mon now. Maybe she won't go too psycho and maybe her dad won't kick yer ass! lol. ohhh. Welp. did you learn your lesson?!
And don't trust people on the myspace. They're weird.