I'm not so sure of this.
I just wish he keeps himself away from me, since he doesn't like me or whatever the reason might be that makes him to behave this way. I have been harassed too many times by him and i think i've had enough.
Please consider it from an outsider's point of view. I'm just coming into this situation, and all I see is the two of you riding each other about who is worse. Frankly -- and I truly mean no disrespect -- you might be too close to the situation to see how childish it seems.
Believe me, I've had more than my share (and your share, and his share, and well, hell, everyone's share) of enemies, so I've been in the same boat.
Both of you, walk away and if you come back later and still can't get along, why not go into your UserCP and put the other person on your ignore list? That way you never have to be bothered by them again.
Wayne