Of course that's what Gil is going to say.

"You're already my best friend," he answers, reaching out his hand to muss Oz's hair. "Have more ambition than just that."

They're going to have to try a lot of different things before Oz finally finds his way here, he's sure. Neither of them had a huge chance to experience much in their lives aside from what was necessary and nothing more, but that's also what made the times they would go out to the fields or into the city so special. It's why they can appreciate the tiny moments in life that would otherwise go by without ceremony.