[ He blinks at her for a moment, because he'd forgotten all about that. Even now, it takes him a moment to try and call up what she's talking about, and then he looks a little sheepish over it. ]

Don't tell me you're still mad at me over that? Hilda, that was years ago. We were dumb kids, and I definitely shouldn't have spoken that way to you. I didn't think you'd remember that, of all things. Will apologizing for it help?

[ It wouldn't be the first time he's had to grovel because of something dumb he'd said in the heat of the moment. ]