I agree with just about everyone else. It's fine to have a sober outlet. My partner has known all along I post here, happens to know my username, I leave myself logged on indefinitely, she respects me so she wouldn't dare snoop anymore than we would ever dare to read each other's journals without invitation. Occasionally, I have let her read a post when I've thought it would help us.
This is your place to help you get better. He gets to reap the benefits of that, but doesn't need to be a part of this side of the process.