FWIW I've seen it time and time again. Men go for some pretty faced, Purdy, modelling lady... and then the relationship turns into total opposition. They become frustrated, angry, controlling and some can't contain these emotions and it get's nasty. An attractive lady can be much more of a curse than anything else.
A real life friend of mine got with a Purdy, popular, pretty faced girlfriend... ended up beating her to near death and re-arranging her face. It was in all the national newspapers. Apart from beating his girlfriend to near-death, he was actually quite a friendly bloke if you knew him.