Sorry you are here fightin....I wish I would have found these boards sooner in my sitch, everyone is very helpful and they understand what you are going through. You will probably find that your outside friends are saying just leave her and get on with your life but they have not been through this situation, so you need to do what is best for you. I agree with Chris in telling your W that you don't want to talk about OW. I actually told my W that I was not willing to live in a 3 person marriage. She had an EA for several months before moving out.
I also am in a same-sex marriage for the time being I am still M but my W is living with the OW and said she is filing. Sorry to say you have a long journey ahead and there will be a lot of ups and downs. Believe me I know its hard but try not to let your emotions go crazy which will push your spouse away even more. Get out there and Gal as much as you can!!! It really helps take your mind off things for a little while.
Hang in there! Your W isn't the same person as who you fell in love with and your old M is gone, this is the gift of time to work on yourself and make you better!
W:42 M:48 T:9 yrs M:1yr BD: Feb 2016 EA Confirmed: Feb 2016/PA July 2016 D: Feb 2017