I [M] hooked up with twin [F] sister and her twin [F] sister walked in on us

I was casually seeing one twin sister. While they are twins, they are not identical and the one I was seeing was not the hottest of the two.

One day, she invited me to their apartment. On previous occasions we would just get a hotel but she thought it’ll be cool to save the money and just come over and get takeout.

I arrived with the takeout order for us. Her apartment was a two story apartment with the living room, half bath and kitchen downstairs and two bedrooms upstairs, with a full bathroom.

She invited me into the living room where we were going to watch a movie and eat before retiring to her room. After only partially eating the food and not even a third through the movie, we began making out on the living room sofa and she grabbed my dick and asked if she can taste it. My answer is obviously yes. I asked her if her sister was gone and she told me no, but she’s definitely asleep because she always go to bed earlier. I asked if she preferred to go to her room since her sister was home and she said no. She didn’t have to tell me twice.