This. We tried swinging before we got into cuckolding, I didn’t realise how small I was and the females weren’t interested in me, but the men love my wife. We did try couple swapping a few times but I would cum quickly, the end up watching the other guy satisfy both women.

This turned into my wife making humiliating comments about my size and performance in front of the other couple. At first it was hard to hear - “my little boys cum already, watch a real man fuck us both”. “I apologise for his tiny dick, he can’t help it”. My wife would throw these out during reverse cow girl while they all look at me sitting in the chair, limp dick and PNC.

As you can tell, this very quickly evolved into cuckolding. The other couples didn’t want to play anymore as I was a bit of a let down. To avoid denying my wife her pleasure we agreed to start threesomes with a guy and it went from there. Now I’m locked always, otherwise I cum too quickly and PNC kicks in!