GM, while their addictions may get more enhanced during the MLC, the addictions are not a cause nor effect of the MLC process. A person who is alcoholic may drink more or they may drink less, during MLC.

One thing for certain though, is that M does not include an OP. Until he is single, there can be no M.

You sound like you are doing well enough. Keep yourself distanced and detached. Even though you wish to rebuild, and that is possibly the more difficult road, do keep in mind that in your case, a possible indicator that he is coming out of MLC, might be that he starts trying to reconnect with you.

Otherwise, he could be stuck and remain stuck, as some do. Or, eventually, that he comes out of it, realizes the weight of it all, and simply moves on with his life. You, never the wiser, that he is through his MLC.

How have you tried to work through forgiveness and acceptance?