Thanks everyone for the support and good words of advice. Today, I will start thinking about how and when to tell him. I am very afraid that he will try to derail me and as Anna said, I have to do everything I can to stay sober now and I'm not feeling strong enough in my recovery to handle what he might dish out.
360 shoes: I have been thinking about what the worst is that could possibly happen if i tell him, and the worse that could happen is I cave in to drinking again, or if I'm able to stay sober, this event will be another in a long line of situations where he hurts me when I need him the most and I guess I'll just have to accept that.
Finally, Deeker, I am taking your words very much to heart. While I'm thinking about how to tell him, I will also think about whether not my reluctance to tell him isn't some sort of backdoor to drinking again. I think I am fully committed, but it never hurts to reexamine that and make sure.
Thanks again everyone. Don't know what I'd do without all of you.