PLEASE HELP ME, FAST!!

Please help me, I don't know what to do...
He wants to die all because I said no.
How can I stop him?
What can I do?
What can I say?
I can't help it if he loves me and I love someone else.
I don't have much longer,
he already cut himself.
I can't believe he's putting me through so much pain.
I know he's going through a lot,
but someone please help me, FAST!!!