What causes men to loose interest in a woman?

This will sound like a real stupid question, but way are men so attracted to good looking woman? What causes men to loose interest in a woman if she turn out to become fat?

hey, that mr smedheader dude is ryt but you no what its same with women to why are women atracted to guys who luk beta than other guys, if you can ansa that then its the same for guys :S if that made sence

Gurps409 in my country woman will be attracted to men that’s not really good looking, I see that on regular occasions, a stunning looking girl with this bad looking gay ”well bad looking in my terms” maybe it’s all in the personality???

lol that happens here to, theyy just the guys who found a loop hole to the thing I sed lol. they use there personality to get to the women. but then again it cud just be what that woman wants a 'ugly' guy so that they can use them and stuf, myt be true you never know.

gurps409, I think you’ve just raise a new topic by saying they just “use” the guy to get things. I have had one of that girls before, that gives you the impression that you mean the world to her and one day just reject you for another loaded guy. The sad thing is that girls usually relishes that the grass is not so green on the other side of the fence, and then try to come back… another difficult decision to make.

lol I think this question thing is going outa control to lol. thats the thing when they want you back, they only want you back because they realise that your the only one who eva actualy loved em ryt?. but yea the hard desision. you take them back it wil b the same more or less, she wil find someone else and then run back to u,or they wil stay with you and not 'use' you any more. to that al im sayin is if you want her back go for it, but she uses you again well then you no to show her the hand/door lol not mentioning to rub it in a little to make them feel bad . lol

p.s: sory abt the short hand ryting im abit use to it im finding it hard to ryt in standard english any more