I usually "plan" a family oriented activity. Do I actually check in, or just invite? Or stay quiet? This is where I get kinda confused on how to approach our usual activities.
Continue to plan family activities for you and the kids. Invite H to join. If he doesn't join, no big deal, do it without him.
That's the key: You are doing the activity regardless of H's participation or not. It's on him. His choice, his consequences.
Note, you need not invite him to everything. For example, you and the kids start to play crazy eights. H walks by and see it, and asks to join. Sure, deal him in.
If you are taking the kids somewhere though, I'd likely let him know and in that an invitation is extended.
P - Hey H, the kids and I are going to park to play on the swings.
H - Ok. Have fun.
Hope that makes sense.
D
Feelings are fleeting. Be better, not bitter. Love the person, forgive the sin.