I've been away for a while so it's great to come back and find this thread going strong!
My story about my wife's first time threesome with my best male friend was posted near the start of the thread, but since that very first time I've enjoyed seeing her with several others. It's always been a two-way street (not just about her having a good time, I've enjoyed many of the guy's wives), but as long as she has a good time with a guy I'm happy. It's been the few times where guys have either been poor lovers or didn't treat her respectfully that I've been bothered and they've not been invited back. As well, I need to feel a good connection with anyone we're going to share our bed with, and she feels the same way.
Our last time with another guy was the husband from a couple we've been seeing over the last year. The wife had been pretty unavailable, so we invited him over to take photos, with the full knowledge that his wife was OK with it. We started off with him taking photos of us playing, then invited him to join us whereon I got some great shots of my wife sucking his cock, then fucking him. He has a real nice thick penis with a big head and it was really hot seeing her with it in her mouth, then spreading her pussy lips as she sat down on him. In the past his wife has been with us so I'm generally too occupied with her to really get a good look at he and my wife playing. The last time we were all together though I had him fuck my wife while she 69'ed with me so had a fantastic view of that big thing stretching her.
We've both really wanted to keep something going with a good friend or friends where we would get together to fuck on a regular ongoing basis. Trouble has been that a lot of people we've met just don't leave any time in their lives for adult friendships. Between family and careers it seems these days like its asking way too much for others to have time for friends, let along friends with benefits.