When we were younger my wife and I had a threesome with another guy on two different occasions and with two different guys. I seem to be in the minority, but I was proud of her and didn't have a problem sharing her. She loved it and I thought it was better than finding out she'd gone somewhere else on her own. Not that it would have bothered me, but neither me or the other guys did anything to each other, we just did all sorts of stuff to my wife!