I am Attracted To My Dad – What do I do?

I am a 22yrs girl and in college. When I’m in holiday, I enjoy hanging out with Dad than Mum. I have this problem that i get s***xually attracted to my step-Dad no matter how I try to control myself. I seeduced him yesterday when my mum was away in a wedding and we ended up sleeping together.

I have a boyfriend but I just find myself getting attracted to my step-Dad and I just don’t no why. I just feel like having s**x with him again and again.. What should I do to stop this? Because he told me that I am better than mum.

He my step Dad but he is so nice. Please help.