Tread lightly here, Sam. If it were me, I wouldn't be trying to get all of you together or encouraging hanging out with them, even as couples. If your wife WAS ever tempted by him, you're running a risk here. I mean, it could happen with ANY couple you guys spend time with, but why allow a situation where there might already be an attraction there, either your wife's attraction to him, or his attraction to her?
Trust your gut here. You admitted you aren't quite 100% sure nothing happened; you said 99%, leaving the door open for doubt, no matter how small the crack. Even though this other guy now has a girlfriend, that doesn't mean a whole lot. And I'm wondering why his girlfriend tolerates another woman texting her boyfriend? And how good of friends was your wife with the friend who is no longer talking to her because of this guy? If your W didn't care anything about this guy, why was she willing to lose a friend over him? I would think that if she didn't care one way or the other about this guy, she would have just told him to get lost, and she would still have the friend. And I hate to say this, but sometimes people tell a partial truth in order to gauge what someone's reaction to something is going to be, or just to create a plausible reason for something they know someone is going to question (and that they know is wrong, like all the texting?).
Sam, I'm sorry to be saying all of this. Maybe it's just because I always tend to think the worst, or maybe it's because my H had an affair, still is having it, and I think I've heard it all. But it sounds like you're worried about this, and frankly, I think you should be. It all sounds a little fishy to me. Hopefully, someone else can come around with a different perspective and set your mind at ease instead of making you feel worse like I have probably done.
But I always appreciate it when people here give me their honest opinion. It doesn't help to bury your head in the sand. It might be easier for a while, but it always come back to bite you in the a$$.
Feel free to argue with me, tell me to go to he!!, or present more facts that might change my mind. I really do hope and pray that there is nothing more going on than what your W has told you.
I'll keep checking back in with you Sam. I hope you can do the same for me!
Me: 38 H: 41 M: 12 D12, S10 H began EA: 7/08 H moved out: 9/30/08 Bomb (sleeping with OW): 10/23/08
My story: http://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=1638048&page=2#Post1638048