Major cheat code for life: Every pattern in your life repeats until you learn the lesson. The moment you choose differently, the loop ends and growth begins.
So some people apologize quickly not necessarily because they have fully processed what they did, but because they want the confrontation to end. Once they say “I’m sorry,” they expect you to move on, and if you continue explaining how they hurt you, it makes it look like you’re dragging the issue. So it kind of puts you in a position where you have to suppress your feelings just because they’ve said the right words.