As a kid, you had the ability to read minds, but you never learned to control it, and most people would say mean things about you in their thoughts.

One of your classmates, Reiko, turned out to be in love with you. You knew this because you could read his mind, but it was driving you crazy. He always looked cold and distant, but his thoughts revealed a different side of him. He would never stop complimenting you in his mind, even for the smallest things you did. You decided you wanted to make him hate you, since you were used to it and could easily ignore him.