personally i wouldnt hate a person, it only brings burden to my own mind, senseless. if i have to leave someone i loved for the hurt he caused , i wont hate him either, at least, appreciated the good time you had, and try to forget the bad things and move on.
There is a huge huge difference between 'not loving' and hating. Hate is a very strong word and a very negative emotion. I don't think I hate anyone - but there are plenty of people out there I certainly don't love.