User blog comment:Mei enya/how can i love him anymore?/@comment-27007772-20150104200435

It's called genetic attraction.

The man is your father is related to you by blood, so your brain uses it's instinctive pack mentality to put together that this is someone that could help your survive, or in today's world, that would be taken as "someone you like".

Love and hate are both simply results of our animistic instincts, and the other emotions are bi-products.