If You Kill Him, I'm Gonna Lose You
They're in the professor's office, and she's in his arms as the portal opens. She begs him to help her, her hands pulling him close, her lips on his... then his hands around her delicate neck, snapping it like a twig, pushing her into the abyss.
Then he wakes up, panting, and she's lying next to him, eight inches of cold bed between them and a thousand miles away.
He remembers the first time he saw her, standing with the sun in her hair, bloody hand raised. Funny how easy blood shifts. Funny how hard it is to wash off.