The book

I always saw dying as my second choice, after living.
The moment he rejected me, was the worst moment of my life. It killed me from inside, it burned. Everyone handles a rejection different. I, yeah, I killed myself. And that totally wasn't my idea of a perfect way to die. I killed myself before they could. Before he could.

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Ellies other mate isn't actually really happy with that.--- (this isn't your typical reject-revenge-white wolf-story SO NO WHITE WOLFS!!)