Facsiliator
A person who acts like they’re your best friend, but they’re just trying to get you to repeat things until you go insane.
My best friend kept making me repeat my lines for the play. I did it 20 times. I was insane.
My girlfriend kept making me repeat my love confession. I did it 10 times. I was ready to break up.
My brother kept making me repeat my favorite song. I did it 15 times. I was ready to kill him.