Continue being Bro.
You stare intently into the darkening sky. You wish you could just stop thinking about John for a minute. He obviously doesn't like you back. If he did, would he still be sitting alone in your truck? Probably not, but you would like to think otherwise. Maybe you should go see what he's up to. It's been a while. You seem to lose track of time easily when you are alone or upset.
You get up from the rock you have been sitting on for the past half-hour or so. You really don't know how long it has been. Probably longer than you thought, because when you first stand up, your feet are both half asleep. You walk over to the truck and look through the window for a second before getting in. John is staring out the front window and does not notice you. He jumps when you open the door. He's cute when he's spooked, or at least he was that time. You'll have to keep him around a while and test the theory.
"Hey kiddo, you holding up alright?"
"Yeah, I was just, you know, thinking about things."
"Like?"
"Well I don't know how to say it. I mean, I don't want to say something wrong or make things awkward, but I was thinking about you, Bro."
Score.