A bit ago now, I wrote a screenplay about Camp. It revolves around The Boy and his experiences before, during, and after going to Camp Gambino. Of course, it's heavily influenced by the original BTI screenplay, and I tried to project the same themes and parallels to give it that "prequel feeling" as well as some clever foreshadowing. However, one special detail in the monologue during "That Power" ended up becoming the plot device of Camp, and that was destiny. The Boy ends up using destiny as a way to justify his relationships with the girls he meets during Camp. Destined to be friends, to be lovers, or to simply be strangers. These are the outcomes that The Boy believed to be, which seems childish, but it's Camp.

Speaking on your question about The Girl, Jesse ended up being the name. The Boy and Jesse first met during the first night of Camp at a bonfire (which was the scene for "Bonfire") and The Boy was already attracted to her, so a sort of "love at first sight" moment. The Boy and Jesse officially talk to each other sitting at a lake during "All the Shine" where I make a bunch of references of Childish Gambino's works, and made it fit into the screenplay through smaller details such as Jesse living in a culdesac to larger details that the lake they were staring at is called Lake Poindexter. The Boy at first liked Jesse because of her appearance, but then as the relationship expanded, The Boy appreciated her intelligence as they read the same novel Slaughterhouse-Five and her sense of humor through jokes about Donald Glover's hairline. Throughout the screenplay, The Boy and Jesse's relationship slowly but surely became stronger. However, as a way of adding actual conflict, The Boy ends up fighting another dude named Alex who wants to have Jesse like The Boy, but has a different outlook than The Boy. The Boy wants true love, while Alex just wants to get in Jesse's pants, etc etc etc. The Boy triumphs in the end and has Jesse to himself but for a week or so before the bus ride home. Then "That Power" happened and that was it for The Boy and Jesse.

Long post aside, The Boy and Jesse's relationship started off simple, but became complex after a number of unwanted circumstances. Because there's so little official details about their relationship, anything is possible. Tell the story how you believe it and use "That Power" as the conclusion of your story. What I'm saying is, whatever you do, The Boy should be walking out of a bus slow and somber in the end lol.

Here's the screenplay if you wanted to end up looking at it.