Look, at the moment he doesn't even have the respect for you to tell you whether he is still seeing OW. WTF is 'maybe'- in cheater language it's 'yes'
CSL I so could have written this exchange. I had many very similar conversations.
He is frightened that he is going to end up with nothing. What a horrible thought for him. Down from 2 women to none. His relationship with OW is on shaky ground so he'd better keep you in the background whilst he sees how things pan out.
Carry on as you were - not performing in his circus. He's starting to realise that actions have consequences.
Those crumbs are stale. If he decides that he wants the M to thrive he will work his back side off to prove it to you.
Being in pursuit of happiness or depressed does not trump ethics and does not excuse treating your spouse as s**t.
