The story starts off with a guy getting killed. Potentially senior in high school or college student? It’s never said what age if I remember. Then it cuts to the main character of the story. Main guy gets a mentor, goes to college, starts dating someone who might be considered “out of his league” I think? They love each other but he goes to some frat party she decorated/designed and sees her in one of the school jock’s bedroom as she walks out of the bathroom with her shirt off. He leaves, gets beat up by the jock, and transfers colleges. They reunite years later, the rest of the story is them miscommunicating on basically everything possible, reconciling/dating again at the end, and you find out the guy who died was his mentors younger brother in like the last 2 paragraphs or something.