His Name Is Ember

Cassie made him out of a match and wire almost a decade ago, and drew a smile with markers a few weeks later. He is Ember, her best friend forever.
Until she forgets about him.
Ember waits patiently for Cassie to take him out again, but when she does, she's ... different. And she throws him away. Looks like forever ends.
Now what is he supposed to do?