I, too, am sorry this potentially wonderful experience was spoiled by this relationship. I agree that something about this woman does not sound right.
Maybe you can move carefully into future relationships. I know it isn't easy, but try to remember the good times you had, and maybe you can consider it a learning experience. Not all woman are like that, believe me.
Thank goodness you don't have to see her at school. I, too, encourage my college-aged sons to not get too serious with a girl yet.
Welcome to Psych Central, by the way!