Want 2 break up with GF but worried she'll try to kill herself (she has a history. dont ask) how to?

want to break up with my GF but im worried that she may try to kill herself if i do.she always says im her world and that she wouldnt live without me,

want to break up with my GF but im worried that she may try to kill herself if i do.
she always says im her world and that she wouldnt live without me, but we constantly argue and dont get along terribly well anymore...
What is my best course of action?

or:want to break up with my GF but im worried that she may try to kill herself if i do.she always says im her world and that she wouldnt live without me, but we constantly argue and dont get along terribly well anymore...What is my best course of action?

Tags:kill,worried,