Agreeing with Krisi and the others on the cheating issue,
plus you could easily give your wife a death sentence virus, not something I want to give to someone I love.

For many women, cheating is of "the heart" or "the sex" or "the desire (lust)" to be with someone else (there's probably many more in their definition list)
I think you would fall in to 2 of these categories even if you didn't fall in love with him.

So if you want to be with a man, tell your wife first, let the S*&t fall where it will, then move on.