I think Mike has an excellent idea.

if you feel bad about making him move out of "the bedroom".. fine! there's an easy solution to that.
YOU move out, to another bedroom in the house.

if you are looking at moving out, yourself, anyways.. this should be easy.

My current status: june 2006. Wife ran out and filed D.
Finalized Jan 11, 2010, after 12.5 years M.
3 wonderful sons caught in the middle