She actually dumps him at the end of the 3rd season!  He keeps trying to make it work with her and she always pushes him (and everyone else) away because she's a psycho idiot.  It's so unbelievably retarded.  One of the most unrealistic things about this show is that he's supposedly NOT a chubby chaser and just falls in love with her for her personality or some garbage.  I think the only time I've seen less sexual chemistry between two people in a tv show or movie is when they're portraying a pedophile/victim pair, lol.