Not a god@mn thing you can do about it except get away from it.
And live your life until they see things differently.
That's just it, TG. I don't see nearly enough of this on this forum. I see more "I'm being her best friend, and trying not to bring up her drinking (her infidelity), because that only pushes her further away from me."
We say all the time here, "go by what they DO, not by what they SAY," but then we -- as left-behind or betrayed spouses -- do just that. I see people post "I have told him/her in no uncertain terms, yadda yadda yadda," but then their actions say "I'm okay with this," or "I'm too fearful of losing you to NOT be okay with this."