He's your close best friend. You & him are besties since you both are in preschool, and it's been 12 years of you & him are friends in Highschool years

You both also have some unique habit. You and him often kiss each other, but it's just friendly peck, not something serious that involving romantic feelings

But actually...who knows?

You're now sitting at the couch and watching tv as Tristan comes up and peck your lips

"Morning sunshine"

He says as he sits next to you