Noctis may not always be great at reading people, but he sure knows that familiar sigh and patient tone. He's distracted for a moment glancing down at what Ignis is doing with his hand...that's new. But his eyes are on Iggy again as he goes on.

Something that Noctis needs to know? Right this minute? He chuckles in an attempt to make that feel less dire. "You always were good at saying really ominous things...sure, go for it."

This is not a refusal, but-- Yeah, nothing good can come after a starter like that, can it? But Noctis keeps listening, and...oh. Oh, shit.

"Oh, uh..." He winces just a little. "Y-yeah. I didn't really get a chance to get into any of that, um...earlier. But Gladio, he's...not the only one." Noctis' tone hovers somewhere between 'see, multiple romantic partners are totally valid!' and 'Six, what will Iggy think of me if he knows this...'.