This seems easy to me Sage....he doesn’t want the family unit as it used to be, so he gets to sit this one out. This is the new normal, right - his plan doesn’t have you in it? Let him sulk, he’s the one who has chosen this path. (My H got all sulky just after we had separated when I organised a trip to the beach for me and the girls and he complained to them that he hadn’t been invited. Even they said to him that it would be rather awkward and he couldn’t understand why.)
M:49 H:49 T:20 M:18 D:16 D:14
EA: Feb 2019-May 2020 Separated: Mar-early Aug 2020 H asked to reconcile: Jun 2020 EA relapse: Oct/Nov 2020 Recon #2: since Nov 2020