For your sitch that fact that he is spending more times at bars can be very telling. There is a good chance that he is not happy in HIS current sitch either.
I don't know if this means anything for your R, though I find it strange that your H is changing his personality.
Take comfort in the fact that he is seeking an escape from his current sitch by going out. He is more than likely trying to keep his mind off something.
There is a difference between hanging out with friends every so often to catch the game and going on a more regular basis.
Changing your group of friend's and your habits for a relationship will not last. He will probably get tired of being someone he is not and move on. Maybe then you have a chance.
Thanks for your support Mrs. D. Keep doing things for yourself and you will get "there". I hope you are having a great day.
Me:27 W:30 S1:3y/o S2:8m/o T:5 M:3 Bomb:5/16/12 W moved out:5/16/12