And that's a real possibility. You'd know better, than us.

There's marriage builders, that has oodles of articles, to be read. There's talk of I v. You statements there, if I recall. 12 steps also have online material and books, to work through between meetings and therapy. Adult child work can be found through al anon. A dysfunctional home of origin, can impact us. If there's no co dep local, adult child works.
Relationships are 50/50. His statement of what he's working on, in therapy, glimmers light, imo.
Your reactions, are as crucial as his communication.
Anger work throughs, John Lee's 'Facing the Fire' hits home. Anger inside, can affect life, much as aggressive outwards acting anger, good to work through tapping into resentment.
There's much, if both parties focus on themselves, before ripping apart their love lives.
Time will tell. And working now, on you, if the relationship survives or not, you'll be well and less likely to repeat patterns.
Takes time, be patient.