Malix was your ex.

You guys broke up because he was far too possessive and obsessed with you and you couldn't do anything. It didn't make him very happy

After a few months you found a new boyfriend. Then malix showed up at you house and your new boyfriends body was on the ground dead.

"Run, baby, run... Run for your life..." He grinned as he walked toward you with a knife "I'm gonna tear out your heart...so it'll always be mine." his eyes glinting with malice and obsession