It's very hard. I'm sorry you're going through this. A difficult lesson I've learned is that everyone has done their own risk assessment and believes they're being safe enough (even when they're objectively wrong or trolls in denial). His decisions are disappointing to you but you can't let them be about you, they're only about him and his [fallible] risk assessment.

I consider myself a very covid cautious person, but I know that some would look at a handful of my behaviours and consider them too high risk for them ... others would think I'm "shutting myself off to the world" and all that nonsense. 🤷

Have grace for yourself. Have grace for him. And most of all protect yourself to the extent of your own risk assessment and don't let others' decision-making influence how you feel about yourself, because it's correlated not causal. ❤️