It just happened
True confession. My husband can never find out. This happened about 24 years ago. I was dating a guy I was really madly in love with him. We went camping with my girlfriend and her husband. I was 23 at the time 5'4" 123 lbs. My girlfriend cathy was 27 and also 5'4" but was real skinny about 98 lbs. While I had a b cup she was an a cup. But we both had good figures and were getting a lot of attention from guys. She was married to a real skinny guy and my boyfriend was average proportional height and weight. So we were out tent camping and had a secluded site. We were doing the usual camping stuff having a few drinks the weather was getting warm so everyone put on their swim suits. Cathy and I were tanning while the guys were cutting wood for a fire. The clouds started rolling in out of nowhere. I ran to the tent and zipped up the Windows as did Cathy with her tent then we all headed to the van to wait out the rain. The guys were in the van having cocktails when it started to downpour. We smoked one and everyone was feeling good. Cathy's husband suggested the girls take off our tops. We both looked at each other and untied our bikini tops. Her husband took the opportunity to feel my Boobs and my boyfriend was tending to Cathy's. We all ended up laying down on the bed side by side and I looked over and could see my boyfriend had his hands inside Cathys bikini bottoms. I felt Al slide his hand in my bikini bottoms and he was fingering me. Everyone was turned on. My boyfriend was removing Cathy's bottoms and Al took mine off. I was turned on and jealous at the same time. I felt Al's hard on and he was starting to push it in me. My boyfriend was already inside my girlfriend and they were getting it on. So I let Al inside me. He was long and skinny unlike my boyfriend who was average length but thicker. I never had such a long one before. Al had wanted me for years and it wasn't long and he started jerking and came in me. My boyfriend was tending to Cathy and got her on her knees and was doing her from behind. We made eye contact as he started to cum in Cathy. We all took a break. Then my boyfriend starts doing me and Al doing Cathy. I had the best orgasm from my boyfriend then. That is the only time I've done this we all stayed friends for years. My boyfriend and I broke up years later I married a good man. He has know idea I swapped. A few times he has asked me to tell him about my previous lovers and I have told him everything except for this. Not sure if I should tell him. Honestly It was the best orgasm ever.