My wife is pregnant with another man's child

Wow this is a really sad situation - and sounds like a hard place to come back from. If it was only cheating then I guess there *could* be a chance to forgive and love on - many people in the world have been there... But, to be reminded every day by seeing the kid and then every so often the dad, you'd have to be a very tolerant man to deal with this. If you really want to try, I'd suggest counselling... Otherwise divorce :/