>>8573125Same reason you ignore some un-attractive girls who fawn over you. If you make your self too attainable or appear too desperate ( i.e. treating them overly well in exchange for their affection ), then you are then very unattractive.
Not only are you un-attractive, but you become evolutionarily repulsive as a mating partner. Women who mate with the beta provider males often get no protection while they are pregnant or for their offspring after they deliver.