About a month ago my girlfriend [23] and I [25] had another threesome with our regular play partner [24]. Usually he always uses a condom while I always have sex with her without a condom. Now was our first time that he could omit the condom, because he had tested himself and we had built up enough trust. This experience was so incredibly overwhelming for us that after he penetrated my girlfriend naked. After just a few thrusts, he was right before orgasm, because he always wanted to fuck her without a condom. He asked me if he could come in her because I wasn’t even in her yet. I looked at her and said yes. It didn’t take a second until he came deep inside her. He smiled. After he was still a bit in her, I penetrated her immediately afterwards. He watched us until he got hard again. Now we both alternated again and again until both of us came deep into her again. The whole time my girlfriend was lying on her back and trying to keep our sperm inside. The sight when she got up afterwards and our 3 loads ran out of her pussy was awesome. It slowly dripped out of her and something ran down her leg. She proudly showed us how much we filled her. We are already looking forward to the next round with him.
Source: reddit.com/r/gonewildstories/comments/ox2vm2/best_threesome_ever_mmf
Best part of an ongoing thing with someone you know.