I think the best thing you could possibly do at this point is stop posting for a couple of days, and just READ everything that everyone has posted to you thus far, as well as reading your own posts with as unbiased an eye as you possibly can.
You have been given BOATLOADS of wisdom in the past month. You have LISTENED, but have you HEARD??? How much of it have you ACTED on?? Just the one simple thing like The Letter, I mean for god's sakes, man, EVERYONE was in agreement -- DON'T SEND IT!!! There have been a couple of other issues, too, where there has been, I don't think not ONE IOTA of disagreement between all these goodwilled and smart people here.
And yet you just couldn't help yourself.
Take the break, man. Just READ, and instrospect. Then come back and tell us if you see things any differently. This time away from your wife may be the gift from God that you've needed. Read I Corinthians 10:13 -- you have your "way of escape that you may be able to bear it" now.