Well you don’t trust him because he gives you some reasons to not trust him. Not saying he cheats. But he does other strange things.

Was he fighting about same thing on thanksgiving too, didn’t even go to a family dinner with you because he was mad about something? Or different topic?

You made a mistake. You apologized. He could be upset if it’s his family member effected but if it wasn’t this, he’d be mad about something else. He seems to like drama and fighting and being mad.

I don’t recommend you shut your mouth, don’t share and worry about him leaving. Maybe he needs to start worrying about you leaving. Why is having all the power? It doesn’t seem equal