I very much understand the way you feel.
He is in a very high pressured job right now. So is my dh. That adds a lot to the flames.
When you called him was he working late? My thinking is that kind of talk should not be held while they are in that atmosphere. But at least he did not tell you he didn't know if he still loved you. So for me that may be a good thing. (Remember I am trying to get thru all of this myself too. I'm learning a lot from the people on this board. So my advice may not be all that valuable but I am trying to reach out to someone who is also in need.

)
You are with him right now. It may be a very long road ahead. Are you willing to walk it? For me, I most definitely am. We have been thru so much together already, have two children, and lots of memories only we share. That's a lot to lose no matter what I may have to go thru to help get him better-not cured, just better.
Sending you another

because you sound like you are in as much of need of one as I am.