Is it fair to say that you trigger each other's fears of abandonment pretty frequently? Maybe this is what he's referring to when he asks why you're always so mad at each other. I can imagine how tiring this might be for both of you.

I’m ashamed to admit that I totally panicked and flew off the handle. I called and called and called and sent a barrage of messages.
You can identify the role your own fears play.

What is your plan next time this happens? What steps can you take to self-soothe before taking your panic to him?