You are old enough to be mature about the situation. Let her know you think you both made a mistake and you should try the relationship again. See what she says. If she says okay, then try it again, if she resists then accept that and try and find a way to put your feeling aside.
"Oh Lord it's hard to be humble, when you're perfect in every way. I can't wait to look in the mirror, cause I get better loking each day. To know me is to love me, I must be a hell of a man. Oh Lord it's hard to be humble, but I'm doing the best that I can." Mac Davis