He married you specifically.

And he did it because he had spent eleven months watching you.” I looked up.

“Watching me?” “From his window, and in the hallways, and in his own room,” Arthur said.

“For eleven months, before you ever met, he watched you sit with dying strangers who had no one.

He watched you hold their hands, and comfort them, and give your time and your heart to people who could never repay you, whom the world had forgotten.

And he decided, watching you, that you were the only person he had ever encountered who would take his legacy and use it, truly, to do good.