Mine is younger than yours but goes out with slightly younger guys to bars. He does it much more frequently than he did when we lived together. In the beginning I saw it as partying. Now I see it as desperate flee from loneliness of his empty apartment. Maybe I'm in denial, but I don't think so. Yes, mine is trying to go on with his life, but it seems not to be working. He keeps calling me for reassurance and support even though I'm supposedly his main problem in life. Stop initiating contact and only respond to his contacting you later in the day or the next day. Mine takes me for granted the more I initiate contact or respond quickly to him. It's really silly. The less understanding I am, however, the more he avoids me. It has been like this for quite a while. Recently I think his going out and avoidance has stopped working for him and he seems to be feeling worse. That could happen to your H too. Or he could drink himself under the table. Hard to say.