If she says she doesn't like you, she porbably broke up with him because she realized that she didn't want a boyfriend who was an ass to people just because he can (unless there is a reason why he's an ass to you). But she could just be saying that she doesn't like you because she cares about you still but doesn't want you to get any wrong ideas.
I don't know the situation well enough to give you anything else though. I hope this helps a little.
