To me it sounds like no one is happy.
It also sounds like he wants to go it alone.
This is good.
Offer to help him arrange for housing, etc.
Agree to the first of April separation. Tell him you agree.
Tell him you will be changing all of the locks on the house on March 31. Then do it.
When he comes knocking, explain the hard facts of life.
Wish him luck, and send him on his way.
It also sounds like he wants to go it alone.
This is good.
Offer to help him arrange for housing, etc.
Agree to the first of April separation. Tell him you agree.
Tell him you will be changing all of the locks on the house on March 31. Then do it.
When he comes knocking, explain the hard facts of life.
Wish him luck, and send him on his way.