However for me this kind of sounds the death bell for our marriage. Not sure if anybody has brought their marriage back from this sort of situation or this far gone?
A month separation in this situation is not much time at all. Take a look at the list of restored marriages in the "Piecing" forum, and you'll find stories of couples who have reconciled after a few years of separation.
What sounds the death knell for your marriage is up to you, and how long you are willing to "stand" to see if your W's A lasts and if she comes around....
The most important thing is to take care of yourself, and stop running yourself around in circles over her.
Read (and re-read!!) the section on "thought-stopping" in DR. And get involved in activities that will fill your time & take your thoughts & energy off of your W.
Me: 50; Wife: 48 Gay; civil union in NJ no kids M: 15 years, together 17 Bomb (OW) 2/09 (EA 3mos/PA 3mos) ILYBINILWY W out of house, w/OW, in separation talks, nothing filed