Nightmares: A Dark Sonamy Story

There was a reason why Sonic only wanted to be Amy's best friend. He fears that if he begins to fall in love with Amy, he will become afraid and start crossing into the dark side. Once he tells his most trusted friend, Tails, he becomes even more terrified once his little brother tells him that he should tell Amy if she were to stop following him, but he can't, because he already loves her.