Came In Girlfriend While Talking To Her Sister

My girlfriend and I were hanging out at her house. She lives at home due to high cost of living and not making enough to be stable yet. She is only 21 atm. We plan on moving out together eventually but our relationship is still a little new, only 6 months. My roommate had friends over and we wanted to be intimate so I went to her place and we watched Netflix. We were not home alone as her younger brother and sister were there. We were under a blanket spooning on the couch not even really watching. Her siblings were in their respective rooms. After probably 20 minutes of teasing and sex, her sister walks in to the living room where this is happening at. I was so close to cumming at this point but we obviously stop. She is asking how it’s going and what we are watching. My girlfriend is trying to answer while I’m trying to hold it together. She finally asks how I’ve been and for whatever reason, maybe the thrill of being caught, I was pushed over the edge. I tried answering that I was good and asked how her day was. Meanwhile I was firing huge ropes of cum inside my girlfriend. I don’t mean just cumming but absolutely blasting hard and a lot. Her sister is explaining her day but I honestly didn’t hear a word of it as I was in the middle of the hardest orgasm ever while trying to maintain a straight face. Her sister chats for another minute or two and goes to the kitchen. I pull out and we pull are clothes up. My girlfriend couldn’t believe that happened and neither could I. I now know that I absolutely love the risk of being caught lol.