The hearteater is like the grim reaper. Instead of comng for your soul, it comes for your (emotional) heart. It usually works with the grim reaper to get the emotions from dead or drying people. But often, it will come from those who expect it the least. The hearteater will swap your heart with "poison" That poison can make you feel suicidal, anxious or depressed.

when you're hungover as shit after a spending a night drunk as a skunk

A girl that makes you love her then pretends she loves you then she dumps you and does that to all of your friends and no matter how much you warn them they don't listen.

A male or female who pretends to love their significant other and use them because they're lonely then soon break up with that other person.

A boy/girl that makes you love him/her then pretends he/she loves you then he/she dumps you and has pleasure of the pain your feeling.

a female or male who who pretends to love you & uses you because they are feeling lonely.. then dumps you.

A female or male who you are in love with and they pretend to care about you and uses you but then dumps you or hurt you and then act like you’re the one who fucked shit up