Tidus did freak Inigo out there, even though he managed to contain the worst of it. He's rather thankful for that fact in this moment, since Inigo really doesn't want Tidus to have to feel guilty about it. It's probably already hard enough for him to deal with the idea that he slipped back into it - or at least, Inigo knows that he'd be majorly worried in the other's shoes.

So rather than confessing to it freaking him out, he instead just smiles at the other, even leaning a bit closer in his direction across the table.

"Do you want me to try kissing you next time to see if that helps?" He jokes.

It's just a joke though, bro. Unless.