I think because you are hoping still that this relationship will work out. You have to start acting as if he is gone for good. You have still interacted so much, I am sure it makes it difficult. You see his mood swings and you are constantly having to act as if.
There isn't another woman involved here and so that may make it harder to accept. Now it is just him and his issues. Let him work through it and maybe don't see him so much. I am sure getting to still see you, helps him.
kat
Me-53(and learning!) S24, S21, D18, D17 Just keep swimming, Just keep swimming. Dory