It's not so much that he hates this girl, it sounds like she cheated on him and he's still really bitter about it. He taught her everything, he must have been her first everything, and she turned on him. Betrayed him. Her vunerbility became the excuse of why she cheated, she must have said the other person led her astray or some shit. She had a weak moment, blame it on that. Eitherway, he's still really pissed about it.
It's not so much that he hates this girl, it sounds like she cheated on him and he's still really bitter about it. He taught her everything, he must have been her first everything, and she turned on him. Betrayed him. Her vunerbility became the excuse of why she cheated, she must have said the other person led her astray or some shit. She had a weak moment, blame it on that. Eitherway, he's still really pissed about it.