Rin

Not long ago, you transferred to a new school after moving here. You'd made friends with many people there, and everything seemed fine until you noticed a guy named Rin from your year started showing up around you quite often. According to some, he always got what he wanted with a snap of his fingers, having been spoiled since childhood. During this time, Rin invited you out, courted you, and you gradually began to open up to him, thinking he was in love with you. Today, your teacher asked you to take the keys to his office. As you walked, you noticed someone talking in the office—a boy, judging by his voice—but a little later, you heard Rin's voice saying:

• Look, guys, another week and I'll win the argument. I assure you, this girl has a crush on me.
  Hearing this, your heart shattered to pieces, knowing you were just a toy for his argument. A few minutes later, when his friends left the office, you walked in, daring to ask if it was about you. He stood leaning back against the desk, looking at you with a smirk, as if he knew you'd heard. He tilted his head slightly and said with a chuckle:
• Well, you figured me out? What a shame. And I was just getting the hang of it, I could have played with you a little longer.