Forgive Me?

Prompt by Droth: Maybe one where Peter is Clint and Laura's bio child and he and Cooper are twins. Peter and Cooper get into a fight and both say something that hurts the other's feelings. After talking to their parents, they both apologize to each other.I'll be changing the prompt a little because we all know that Peter tends to overthink his words and would never say anything hurtful to anyone, even when insulted (*cough* Flash *cough*).**********"Right, sorry," Peter said softly, getting up and backing towards the door, "I'll just go.""Pete-," Cooper said, getting up. Idiot. Such a big idiot. Why are you such an idiot, Cooper Barton?"I had promised Ned that we would study French together. I'm gonna go. Bye Broba-," he hesitated, "-Cooper," he corrected. And then he was gone, chucking the hoodie he was wearing on the bed and running out."You don't even have French," Cooper whispered to nothing, his guilt weighing him down.