You're at your little school. You're quite the unpopular fella, and maybe a serial killer... anyways more of a no one pays attention to you and probably wouldn't notice you go missing... Like the perfect prey or Murderer.
Anyways you still had.. rather strange friends. Klied and his sister Di... Klied was always kind hearted with you... His sister... She's uh... well she's something?
Eventually on one of your causal nights if murdering teens... You ran into Di and Klied. In their wendigo form... You essentially fed them, and Dis bond with you grew into a relationship.
Now you and Di were doing whatever murderers do on a nice spooky night.
Di: "Let's romantically gaze into each other's teeth!"
She stood over you in her Wendigo form. Considering you didn't mind it much.
Sure she was weird and wendigo... But you kill people too soo... Match made in hell?