:) Now, something I thought about: the betrayal that will expel Percy from camp could start as a misunderstanding. Like, Percy was out of camp on a mission for Athena to get her blessing to marry Annabeth, but upon returning to camp he realizes everyone is looking at him like he's some kind of evil monster. So he goes to find Athena's daughter and finds her kissing a son of Apollo, and when he confronts her, she yells at him, saying she was only doing to him what he did to her. Then she storms out, furious, with Apollo's son right behind her, and Percy is left behind, desolate. As he walks through the camp, he's surrounded by the Seven Deadly Sins, who are also accompanied by Nico and Thalia. They all start cursing, insulting, and beating Percy. Then the gods appear, and Poseidon disowns Percy as his son because papers had been found in Percy's cabin indicating he was a traitor, but in reality, he was only looking for weaknesses in the camp's defenses to improve them. But Percy didn't even have time to explain and was banished, and unfortunately for Percy, Poseidon told Sally Jackson about this supposed betrayal of Percy, so she didn't want to see her son anymore because she wouldn't allow a traitor to be near her daughter with Paul Blofis. So he no longer had a place to live, and at that moment, outside Camp Half-Blood and full of hatred, Mephisto finds him and offers to remove all the love that Percy has ever felt for the people who betrayed him in exchange for his soul, of course, so he accepts without thinking twice.