Roland sure won't be able to notice, with Inigo sitting behind him and all, but Tidus will clearly see Inigo mouth fifties? in confusion. Wasn't Roland 67?

Not that his mind lingers on it long. Not with this immediate 'to flower or not to flower' conundrum in front of him. Roland really seems to want it, but something about that Tidus says nicks a little at the corners of his resolve, insecurities sneaking in. What if he makes Roland look dumb? Or eccentric? What if his reputation suffers because of Inigo?

But there's the realisation that Roland is probably just going to fuss over him if he backs out now, and Inigo sure doesn't want to cause the other worries either, so.. ugh! Fine, whatever! He'll just do it and make sure Roland realises what he looks like at the end!

So Inigo finally takes the flower necklace and starts braiding Roland's long hair, having an idea of what to do with it, even though he's not sure how the final result may turn out. He looks half-pouty, half-focused about it - apparently focused enough that he doesn't even say anything for now, letting Roland instead reply to Tidus's words.