This is how I think the story leading up to this went:
John and Dave have been best friends since they were 13 years old. They chatted on Pesterchum but then met (Which surprisingly they live in the very same state and go to the very same High school). In fact they knew each other after forced partner projects. So it was a surprise to everyone when a nobody started hanging around with the cool kid. They greets consisted of John jumping on Dave's back most of the time and Dave carrying John around.
Then one awesome day Dave decides to confess, so he does, but at John's house away from their peers. John reciprocates his feelings. Then 2 months later they are still dating but John has been out for a few days and Dave didn't have the courage to go over to his house, thinking that John was mad at him (for some reason). Then as the bell let's out and another depressed day for Dave, John runs straight for him and then BAM! Their kissing, right infront of everyone (Because Dave wanted to come out with John as being boyfriends but John was too scared of what was going to happen). Dave is very happy and then they get to be open for the rest of High school. THE END!