I started to have sex with Dad just because of my step-mother. She's a witch and this makes feel better every time she does anything against me. Dad says I'm much better in bed than she is and I try to make all my Dad's wishes. He told me he likes hairy women and my step mother didn't even tried to please him, at least for some time, she said always no. I personally don't like it either but I did to please Dad, at least for some time, until he gets really fed up of my step-mother and sends her away.