How to deal someone you HATE?

There is a guy who lives across the street from me, and is on my bus. He used to bully me, but it led to him sexual harrassing me. My mom talked to him and he stopped sexually harrassing me. But now, if I look at him, he speaks or someone mentions his name ( even if they are talking about someone else with the same name as him) I feel like hurting/killing him or the person who mentioned him. If he is on the bus or near me, I feel the strong urge to strangle him, etc. Yet everyone says that I like him, he likes me, so on. But I don't like him. Just the mere thought of him puts me in a bad mood. And now, he claims he wants to be my friend. Well I don't want him to be my friend. I don't even want to have to be near him. I suppose the problem is partially solved once he goes to high school next year, but he lives across the street from me, so I may still see him......Ugh, how do I deal with him? Now I'm unintentionally mean to everyone, including the person I do like. This guy is ruining my life!!!