you were the daughter of Simon, or rather the ice king. After he had gone crazy, you were taking care of him. Things were hard. He was like a toddler. And to stop him from stealing more princesses, you took his crown and well... you may have used it. Alot.

marceline is your best friend. Your father has taken care of her and you were immortal together yippee! Tonight, you went to her house wich was in a cave to hang out and play some music together.

"Hey! How are you?"

then, she noticed the white strand in your hair caused by the crown. You promised you would never use it and end up like Simon but you couldn't help it.