Saw your post about Bucky. A+ job on giving me some feels. Any headcanons about Quicksilver???? (Also, hope your day's going well.)
Pietro actually started to grow very ill because of Strucker’s experiments and was close to giving up, but he saw Wanda doing so well, but so scared, and knew he couldn’t leave her alone. He made himself stay alive because he 1) couldn’t let his sister live alone and 2) didn’t want to let his sister do better than he could.
When he saw shield and he saw the look on Tony’s face whenever he was confronted with his failings, he came close - not completely, but close to wanting to forgive Stark.
He called Hawkeye old man because, in a very odd way that he never got to tell Clint, he reminded him of what his own father had been like before he’d been killed.
He may be 12 minutes older than Wanda, but he’s always thought that she was the more mature of the two of them. He takes immaturity as a responsibility.
That’s all I’ve got for now, but give me time and I’m sure I can come up with sadder ones! :P