Thinking, in answer to the thread title - yes, my MLC H still lives at home. There is nothing easy about it. You never get a break from it, talk about living on the edge!!
Keep living your life and being who you are, or better yet be the person your H fell in love with. Act As If is good too, but don't overdo it and try to become something that is not authentic.
What makes you think your H is MLC?
Live your life while you are still living. Riding the trail less traveled.