I'm wanting to leave my fiance over his reaction to me getting a student suspended.
Why does his reaction matter to you?
He's an insensitive person, he's not only acting like it was my fault but also minimizing what I did.
Sorry you're in such a tricky situation with your fiance. I think it would be beneficial to have a discussion with them about how you had to handle the situation. It could be a simple misunderstanding on his part.
That's what I'm doing now, he's an insensitive jerk.
It's good to communicate this with him so you will have the chance to talk about why it upsets you. I would recommend you be and calm when you start the conversation.