<<Even the most spiritual people fall my friend. There have been many instances of very 'godly' pastors losing their place in the church because of it, and not to mention some very public ones. I'll bet if you ask your pastor he'd tell you he's unfortunately dealt with it in couples in the church alot more than you are probably aware of.>>
What a joke. If your spirituality lets you fall, it isn't spirituality.
There is law and there's the spirit of the law. I once met two women at the same time and naturally mentioned it to both because I want honesty myself. One of them was merely curious and competitive with an former girlfriend, I came to find out, and the other couldn't handle the info because the second girl had the same name as her sister.

That one was married but separated from her husband at the time. Neither situation violated my sense of the spirit.
I won't intrude of an ongoing relationship and I won't violate one I'm in either. I do this, not for religious reasons, but for spiritual ones. In either case you harm yourself and others.
Amish, I would have, I think, more respect for your comment if it were: "My wife has had other relationships. It's no big deal."