Ji Won looked down at Mina, through his tear-filled eyes. "I'm so sorry Mina."

"Don't say you're sorry," she whispered back to him. "You've done nothing wrong."

Ji Won shook his head. "I'm so sorry. You've done so much for me and I haven't even realized it. I haven't done anything for you except put you through a lot of pain."

From the story, What I did for love.