[That didn't work. He watches Lumine's expression get even more sour in real time, and it makes him laugh nervously and throw a hand behind his head, that tell tale nervous tic of his whenever he knows he's in a little bit of hot water with someone.]

Hey, you know I don't break my promises. I really will do my best to take it easy on the way back.

[Cue another cough that makes him stop for a moment, sighing afterwards.]

Even if I tried to break my promise, my body wouldn't let me anyway. Come now Lumine, stop looking at me like that. This chance meeting is too good to pass up, and I'd rather spend it amiably with you than to leave with the memory of that scowl branded into my mind.

[He sends her an apologetic look, holding out his hand almost as if he were inviting her to take it, though it's more of a gesture of asking her just to follow him so they can go somewhere and relax for a little bit.]

I'm sorry I made you worry. Let me make it up to you at least by treating you to something.