"I need you to hold my hand!"

There's a slight pause where Inigo seems to realise that, because it's him specifically, Tidus may not understand the way he means that in this instance.

".. Metaphorically!" There. Nailed it.

Inigo points to Tidus, who's currently playing the role of The Candy Hoarder, and then to the screen.

"I'm doing this because I thought it would be more fun to do it together."