Hi Valeria, I have read your story many times. I found it in my early days of reading as there was the same age gap between my H and his OW and I was searching for help to come to terms with it. I was so sad when I then read you had D. Seems strange now that you are reposting and things have changed again in your sitch. My H and OW are now into year 4 of the A. They too are drinking buddies and H posts about it on fb all the time, almost boasting about their antics.
I wish you well, and I truely hope things continue to improve with your H. You deserve the best.