Step

I have a 25 year old daughter and she has a 23 year old sister. Her sister is from another guy. We were sperated at the time. But I have always treated my step daughter like my own. I watched her grow up. She is about 5'7 slender body, she has really big breasts. She uses a dd bra. She has always been comfortable around me. Called my dad her whole life. About a year ago I noticed she was calling me daddy instead of dad. She had also started sitting on my lap. She hadn't done that since she was a child. Her mother went to visit family a month ago. She was gone for two weeks. My oldest went with her so it was just me and my step. I noticed she would walk around the house in a sports bra and tiny volleyball shorts. One night she wore a crop top with no bra I swear her nipples were hard. I was in the attic playing my guitar when she brought me a sandwich and she offered me a drink. I could smell the alcohol on her. She had me play a few songs. I took the guitar to the living room. And played. She sat in my lap and asked me to show her how to play. I could feel myself getting hard. She would adjust herself and when she did her ass rubbed against me. I was completely stiff when she stood up. She turned around to face me and sat in my lap her legs wrapped around me. She hugged me nuzzles her face into my neck. She started thanking me for being good to her. I started feeling guilty because of what she was saying but she was grinding on me. I stood up and had to shake her off of me . I was still rock hard. Her mom came back so she has been more calm. But now at night I catch myself thinking about my step daughter. Wonder how good her pussy would feel. I was banging her mom when I almost called out my steps name. Part of me want to see how far it will go.