their abuse. The whole "I was there for you" bit felt more like emotional blackmail to me, him trying to passively aggressively lay a guilt trip on her. Like he's saying he was there for her so she should now stand by him while he drinks, lies repeatedly to her face and cheats on her with randos. That is abusive behavior and that no woman should take from any man ever.
Finn has been a recovering addict for some time so surely he has a sponsor. I would feel like anyone in the program does. If he doesn't have a sponsor then call Alexis who has filled a sponsor-like role for him before.
Liz could've called or texted Chase but, again, she is not this grownA$$ man's mother. At some point, he has to own his behavior.
