The third one. At least he saved someone's life and in doing so could have changed how his mother felt about him. A meaningful death, I would call it. I would not choose the first or second, though, because both are selfish. The girl should just get over things. People will cheat on others for a fact, better not let those people get under others' skin. For the See More boy who loved to sing, well let that be a motivation to him. He may not be able to sing anymore, but he isn't deaf and can still listen to it. He might be sad, but he could inspire others and excel himself at something new.
But #3... If his life is that bad then he shouldn't live and suffer.
I would not choose the first or second, though, because both are selfish. The girl should just get over things. People will cheat on others for a fact, better not let those people get under others' skin. For the See More boy who loved to sing, well let that be a motivation to him. He may not be able to sing anymore, but he isn't deaf and can still listen to it. He might be sad, but he could inspire others and excel himself at something new.