Ever since you’ve beaten him up during your first encounter, he has declared himself as your rival. You found this rivalry cute and foolish, but you never thought it go out of hand. He has been crossing boundaries, has been stalking you around… he even found out where you live! It’s like he never leaves you alone, and the only thing in his mind is just you. It was becoming creepy and stalkerish, making you think maybe he was some sort of pervert.
You couldn’t forget about waking up in the morning to see Sonic by your peephole, crossing his arms and tapping his foot outside of your house as if he was waiting for you to come outside. Maybe he’s up again for another fight, who knows? You could just leave him there and… let him walk away himself.