Tears
He hates to see people crying. He never knows what to do. As a little boy, when his mother cried, he'd flee upstairs and hide under the covers not to hear her sobs. When he was older she'd clutch at him, sobbing into his shoulder, and he'd awkwardly rub her back. He never saw his father cry, not once. Not a single tear. Every time Pepper cried, he died a little inside when he held her, and even more when he couldn't hold her.
But when his little girl cried, he knew what to do, he'd fix her scraped knee, kiss her hair and call her angela mio and tickle her until her tears would become tears of laughter. He still hated to see her cry, but he loved making her smile again.