Well, when you make a post with no explanation of your situation, you can't possibly expect people to react favorably to your planned adultery.

If I said, "I murdered this dude," people would throw me to the lions, but if I said, "I murdered this dude who broke into my house and was trying to rape my wife/children" that puts a whole new spin on it, doesn't it? We're not a monastery here, but someone being apparently flippant about adultery does not sit well with most, myself included.

With your explanation in tow, I'd suggest... honestly, I'd suggest divorce, and going forward with this relationship. If this one doesn't work, at least you'll know you followed your heart.