Dionysus, who undoubtedly has been informed of Hyacinthus' visit, nods. "Wish I'd realized he was here, it would have been nice to get to say hi. But I was -- ah, I was with Ariadne all day -- or well, for the most part, so I guess that's why I didn't see him." And that's totally the only reason he didn't run into Hyacinthus.