I'm so sorry for this situation you are in. I know that if my W "went through the motions" and then another BD I would be devastated all over again. I would only hope that of she decides to "go through the motions" she will keep me in the loop along the way.
I wish I had something concrete to tell you. But know that you are not alone in your fight. If you want to save it try try try. Maybe him telling you this was something not to believe a test from him to see if you will continue to believe in the marriage or not.
All the best
First date 12/24/13 M 3/12/14 BD 2/8/16 Working on it alone since 2/8/16 Doing things wrong 2/8/16 Doing things different 3/12/16