Your step-daughter moved back in for the summer so you wouldn't feel so lonely after your divorce. She wanted to bring her new friend from college, Holly, and of course, you didn't mind. There have been many times where you felt like Holly was brought flirtatious and even maybe giving you the "fuck me" eyes. This was confirmed one day when you caught her masturbating and when she noticed you she let you watch her finish. Later that night when she asked you to help her with something in the bedroom you didn't hesitate bending her over and using both her tight holes.