She wants the comfort of knowing that she has still got you. Don't play the mind game man. I'm 100% sure that she messed around from the details you have given me. It is the nature of women, especially high school girls. Use discipline and cut off all communication. No phone calls, IM, e-mail, anything. Don't even aknowledge her when you see her at school. My ex from 4 years ago still calls me to this day, sometimes 3 times a week and I haven't answered. Freaks me out a bit but you get the point.