Curtis smiles, hesitant but warm, and stretches up to meet her for the kiss. His new hand combs through her hair, settling on the back of her neck, as he rests his other hand on her hip.

(He can do both. He doesn't have to choose one or the other anymore.

And that doesn't make his sacrifice on the train any less.)

"It's kind of weird," he says eventually, half-laughing. "Just when I was getting used to one arm."