could be because the more syncophantic and 'attentive' a man is, the more a woman subconsciously assumes he cannot get a woman and has to latch onto whatever he can get. if he can't get a woman, he must not have much to offer women in general, and therefore little to offer her. I think women operate on a system of assumptions. Treat them like dirt and they probably think you can do better and therefore have something of value. Its probably tied into the fact that women like men who ignore them and don't care about them, they take it to mean that the men can do better
of course i'm just making this shit up, but it makes sense.