My friend’s sister is getting heated in the middle of the campsite and asks for a dick

From a very young age, I have been friends with a beautiful girl who lives right next to my house. She has a very close sister around the same age. However, when they were younger, she lived with her father while my friend lived with her mother. As adults, things changed, and a couple of months ago, I met her and we got along very well. That’s why we decided to go on a camping trip together, my friend, her sister who is now my girlfriend, and me. When we arrived, I was in trouble because I had slept with another girl while she was my girlfriend. Somehow, she convinced me and to give her the pleasure she wanted, I masturbated for a long time while touching her big, juicy breasts. I put her in the four posts and like an animal, the bitch screamed in pleasure, not caring that her sister listened to her screams of pleasure.