On some level he knows where happiness comes from. It's justy that right now, he is so miserable, he's lost.
I have had a couple of those "couldn't keep my mouth shut" moments. Do they do irrepairable damage? I don't know. As long as you're not vicious, I think it falls under the category of things that need to be said. Just work at keeping them few and far between.
I know how hard that can be with them at home. Ever vigilant is the name of that tune.
