He's not sure how to answer that, and as a result he ends up giving her a long, bleak look before he manages to scrape some words together. "When I left Heaven, the world was ending. I didn't see any reason to try and form a bond that would only be taken away. No matter whether Heaven or Hell won, I would have been executed. Why put a human at risk?"

"And then...I don't know. The Apocalypse failed, and I was an exile, and I didn't know what to think, or do, or how long it might be before some other disaster cropped up. I like earth, and humanity, and mortals in general, but I'm not whole without my family. No angel is."