Most midlife crises are temporary phases. By focusing on your own stability and happiness, you become the "anchor" he eventually realizes he needs. If you’d like, tell me: Has he or is he still in the house? Is there a third party involved? How long has this behavior been going on?
Don't be a doormat; tell him what you won't tolerate. Most midlife crises are temporary phases
Be the "calm in the storm" when you do interact. Most midlife crises are temporary phases