Am I right to be mad?

My fiance was parallel parking and I heard a loud crunch. He wasn’t going to check out the damage and said he didn’t realize the car in front had a hitch, which he ran into. It fractured our license plate which wasn’t too big a deal, but I was mad because this isn’t the first time and he routinely bumps into curbs because he drives carelessly. I was also mad that he wanted to pretend like it didn’t happen and acted like I was making a big deal out of it.