I haven't seen my step-sister in years and finally, she came to visit and we had LOTS of drinks and talked about the family. I asked her if she remembered when we were young and in grade and high school, how we use to play doctor and fuck among other things! She did of course and she and I both knew that we still had filthy feelings toward each other so we went to the sofa, stripped naked and did some things we both may regret in the morning..but truthfully, we are both sluts, just like our parents and we just can't help but to fuck family members, especially, each other!