I'm sure you already know that I can't be with you forever.

[That was the elephant in the room, so Hiro figured that it'd be easier to address it now. There's a peaceful acceptance in his voice whenever he says this. It would've been easier for Ai to move on and find a human guy.]

Everyone has a role in the universe and I have to play mine. If I prioritize you over six billion people, then I wouldn't be a very good god. Some things have to be done for the good of this world.

[And he did genuinely like the perks of godhood. There was even a part of him that wanted to go back. He couldn't explain it very well, but just an indescribable inhumane urge that wanted him to return to the stars.]