Have you exposed his infidelity to anyone yet?

Have you contacted a lawyer?

Have you collected boxes for moving out?

Have you found a GOOD Family Therapist for you both to talk to?

Do these things.

Your husband is manipulating you into an OPEN MARRIAGE... crying doesn't mean he's respectable... CHILDREN CRY...

DOING the adult thing does.. he's not

You need to prepare a confrontation script for him and you need to be prepared to follow through on it.

This phase out/just friends BS is BS. He's addicted and he's afraid of the withdrawal... He's being a big abusive child...