So they weren't quite childhood friends, like what Yuya has with Yuzu and Gongenzaka. But maybe there's still a similar enough development of feelings it'll still give Yuya the insight he's looking for.

Not that he turns back to Strange when he answers, embarrassed to even be broaching it. "Oh, so... how did you know you liked her like that, and not just as a friend?"

That's the most vague and unspecific point of advice to ask for but look, he's never dealt with this before.