The speaker looks back on ending a relationship, or at least disappearing from someone's life, because they believed it was best for the other person. The poem begins with total devotion: "you were my everything." Then the mood shifts. The person they loved is growing up and heading toward a world of parties, girls, and drugs, and the speaker feels out of place in it. Scared, young, and lost, they decide they have become a "distraction" and a "disappointment."
What stands out is how the speaker frames the departure as a gift. They remove themselves so the other person can have the life "every boy wishes to have." The final line, "one with prettier girls than i," gives the game away. It reads as a quiet, self-deprecating ache, suggesting the speaker doesn't think they were good enough. The mood is sad and resigned, and the short, plain lines make the hurt feel raw rather than dramatic. Even the title, "gone," sounds final and a little lonely.