Hello, people of the Percy Jackson & the Olympians archive! I finished reading the Son of Neptune (AWESOME BOOK) and am really mad at Nico. I mean, WHO KNOWS ABOUT CAMP JUPITER AND KNOWS PERCY IS THERE BUT DOESN'T TELL ANYONE? What a bad cousin. *huffs* So, since I'm a huge Thalico shipper, and since Nico must've known Jason and Percy were in Camp Jupiter, but didn't tell anyone, this one-shot came to live! Which is weird, since I got it in the middle of Science class looking up ligers...

Betrayal

"You knew what?"

Thalia Grace stared at the son of Hades in shock. But the shock was slowly turning into anger. And another thing, but she refused to believe it.

"You knew all along that Percy was in Camp Jupiter? And you didn't tell us?" Thalia yelled angrily. Nico di Angelo, now 16, stared at her with his usual emotionless face. The last three years had changed him. Considerably. But she didn't care that he looked so damn beautiful in his black skinny jeans or his black hair falling into his eyes made him look cuter.

Thalia had been too busy with the Hunters to have gone with Annabeth and Jason and the others in the Argo II. She only appeared during the Giant War, where she got this short summary: Percy had his memory back, Nico had a Roman sister named Hazel who Percy bonded with as friends, their was a son of Mars named Frank that was actually nice, and Leo was in a love triangle with Hazel and Frank.

But Percy forgot to mention one little detail: Nico had known all along that Percy and Jason were in Camp Jupiter. He decided now, right when Nico appeared from the shadows, that the son of Hades knew.

"You knew Percy was here and didn't bother to tell anyone?" Thalia yelled, thundering booming, lightning flashing. "Do you have any ideas how worried everyone was? How Tyson was? Grover? Sally? Annabeth?"

Nico flinched as he rubbed his arm, where Thalia guessed was where Annabeth had slashed at him when she found out. Serves him right. "How could you?"

"Thalia, I—" Nico started to say.

"Percy is my cousin, Nico! Our cousin! How could you keep him in the dark? Percy deserved to know who you are and why you looked familiar! And not only did you keep away his memory from him, but you didn't tell me about Jason!" Her eyes filled with tears.

"I didn't know he was your brother!" Nico defended himself.

"Doesn't the last name Grace give you a clue?"

"Thals—"

"Don't call me Thals!" Thalia took out her spear, her eyes flashing. She yelled, and lightning came down, crashing against Nico. He groaned, looking up, and his gaze met Thalia. And she saw in his eyes heartbrokenness.

And that's what she knew what was the other emotion she was feeling.

Betrayal.

She had been betrayed. Again.

Her eyes filled with tears again—both from anger and hurt. She had been betrayed first by Luke, who hurt Annabeth and poisoned Thalia's tree. Made Annabeth hold the sky. Torture Percy and Annabeth and Grover and everyone. The prophecy hadn't been the reason she had joined the Hunters—just a minor reason. The real reason was because of Luke.

And then she had to go and freakin' trust Nico with all the freakin' trust in her, and how was she rewarded?

Right. She had been betrayed again. She should take the "No boys" rule of the Hunters more seriously.

"I TRUSTED YOU!" Thalia yelled, lightning flashing. "I put all my trust in your hands! You knew that! And you didn't tell me about Jason or Percy or Camp Jupiter!"

"Thalia, please, I—"

Thalia took out her hunting knife and slashed at Nico's arm, leaving a deep gash on it. "I hate you," she spat. "I don't want to see you ever again. Goodbye forever, Nico di Angelo."

The daughter of Zeus turned on her heel and walked away calmly, leaving a heartbroken Nico behind her.

*::*::*

Were Thalia and Nico OOC? Please tell me in your review. :) On other thoughts, I hope you liked this! :) My first Thalico story...I hope it didn't suck. :P REVIEW!

And do you want me to do a sequel of how Thalia forgives Nico to this story? TELL ME IN YOUR REVIEW!