I think Krishna had the capability to multiply himself and become two, three, four.......and so on at the same time. Therefore, if a woman really likes to have him as her husband or so, Krishna would not disappoint her by turning deaf ear, rather he would listen it carefully, multiply himself and used to fulfill the person's desire.

Note: I heard this story. I did not read myself in any literature. I do not know the authenticity of the story.