I was just sitting on the couch and my step sister walked past me. I asked where she was going and she said out with friends and asked if I liked her outfit. She said that she wasn’t wearing any panties and showed me her bare ass. She then went out and my dick was hard ever since i saw my stepsister’s ass so I pulled out my cock and started masturbating. Then my step sister came back in and said that she forgot her purse and asked what I was doing and offered to help me. She started sucking my hard cock and asked if I wanted to fuck her. Then I fucked my step sister right there in the living room.