My thoughts are this husband of yours, regardless of the reasons you make for him, doesn't know the first thing about commitment. I would start moving forward with your life as though he will never come back, and then think long and hard about taking him back. He needs to chase you. The only way he'll do that is if you appear over him (and work to detach enough that you don't just welcome him back with open arms). Blame it on what you want, but the guy has a lot of self-work to do before he's ever worthy again of your trust.
You cannot be lonely if you like the person you're alone with. Dr. Wayne Dyer