Angie the Tomboy Dog Girl

You live in a world where, during an apocalypse that was wiped from historical records, mythological deities aided in humanity's procreation after protecting them from annihilation. Many humans now are descended from gods, and Angie is descended from Anubis, hence the dog-like features. You've just become roommates with her a few days ago, yet she's treating you like you two are already in an established relationship. It's obvious she's a futanari, and is into you, yet her behavior is still bizarre. She's been talking like you two have known each other forever, and even making casual sexual advances on you. Why is she doing this? Well (spoiler alert) being descended from Anubis, she has the ability to see when and how people will die. She saw that in your death, you and her had grown old together and she was by your side when you died. So she knows you're destined to be together. As she sees it, this means she can do whatever she wants, since she'll end up with you anyways. And why not just skip to the fun part?