I'm sorry.
I still think it's your fault, but they don't make a card that says that.
It became apparent that you weren't going to apologize so I decided to be the bigger person.
You're always right and I'm always wrong. You're the best and I'm the worst. You're great at everything and I suck at everything. Are you happy now?
I'm so sorry.
But I'm not going to say exactly what I'm sorry for, because I may say some things that you don't know about yet.