Anyway, in regard to the thread starter....
You got duped. Face up to it and enjoy that fact that you got some. Some people will fake interest in anything to bag a piece and since you are still married he probably feels little guilt over the hit and run.
Here's the truth.. Many folks don't believe sex is any more than an animal urge that needs to be sated. I'm always telling my one friend that banging a guy means nothing. Sadly, sometimes marrying a guy means nothing either.
It's just the way things are.
By the way, did the fella in question have anything pierced??