What makes a guy want to destroy the self-esteem of a girl?

I hanged out with a guy that just used me for sex and I couldn't handle it anymore so I left his house and consequently him. He thought I was having dinner with him cause I told him I would leave nex day but I couldn't stay anymore. After that he offended me as much as he could blaming me for not have treating me right. He called me ugly, a loser and unable to fulfill my dreams among other cruel things. I showed him my vulnerabilities and he basically throwed them to me. I have deep depression and I am unemplyoed so this hit me really hard and I just can't feel good with myself, I'm constantly crying in my room and I don 't know who to escape from this... I totally hit the bottom.
What makes a guy want to destroy the self-esteem of a girl?
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