[Ah yes. He hoped she'd catch that. IT'S THE BEST PART OF THE STORY. OKAY.] It seems Amara's people have a very unique curse. If they make eye contact with a mortal, they're fated to fall in love, completely without question.

[Which he likes, but he is also really itched by, because IT FEELS AS IF IT GOES AGAINST EVERYTHING HE KNOWS OF MAGIC, even if he's never read that anywhere. SURELY MAGIC CANNOT MAKE YOU FALL IN LOVE... But it can.]