Help?

i wish i could just leave. It would make so many people happy. Maybe one person will be sad. But no one else cares… If i die, will you cry? probably not. 2 days ago, my relationship ended because he found out i self harmed and left… He said he was going to tell his friends that we broke up and i told him not to tell. He said “They wont care, i don’t care. I just feel bad for you” and this was over text. Maybe one day, someone can help me…