Just be aware you're treading on dangerous ground. I never figured this one out. My XW still wants to be friends and says she doesn't talk to anyone like she does to me. Meaning, I provide a need and as long as I'm there for her, she's free to do what she wants. When I'm not, she's left with her own actions to consider.
My sitch is different, though. My W had A and is probably still in an EA at least with OM. Maybe not but who knows. She walked out on me. So ... I feel justified in shutting off the friendship option and concentrating on myself. You're in the opposite position, so probably need to work towards friendship and support. Work hard - at least for D if nothing else.