I'll tell you what, when we say we 'hate' or 'love' somebody, we tend to exaggerate the degree of our thought and emotion. Your friend may not hate her neighbor as much as she guarantees. And otherwise, one is always likely to have this kinda gravitational pull or something towards the forbidden fruit kind of thing. Like if you dislike them, out of intrigue as to why they are how they are et cetera will pull you towards them really bad!
Lastly ------- hormone doesn't ask us on whom to crush before it starts raging!