My Boyfriend Is A Shy Zombie!

I thought I would be eaten: the zombie had already raised his hand over me. But instead of biting, he wiped away my tears. Awkwardly, as if learning to be human for the first time in his life.

Since then, he brings me food, shiny trinkets, and medicine, and I teach him to read. Everything has its price: sausage for a hug, a loaf of bread for a kiss. But a rescue team has already entered the city, and they are clearing every house. He stopped returning in daylight and no longer argues about the reward.

What is he planning when he asked for his reward right now? And how to explain to the rescuers who he is?