There was one person, with whom I didn't get along all that well in middle school, whose attitude toward me changed for the better during high school. A friend of mine had written a story on my bass playing for a journalism class. My former antagonist was in that class, read the story, and told me a few days later, "I was impressed by that story. I didn't know you played (the bass.)"
The story had gotten his attention because he was a band student. We didn't become best friends, but his attitude toward me was generally civil, from then on. I became more civil toward him, in return.
Sometimes, when you learn what talents a person has, it gives you a dose of humanity.