Vampire Royalty (Indefinite Hiatus)

Percy Achilles Jackson is not only the son of Poseidon but Vampire Royalty.

Nobody(other than a chosen few) really actually knows where he goes during school. That's quite simple really. He goes to the Academy with Rose and his Royal Sister, Lissa. After the car crash, Percy got adopted by Sally Jackson, Poseidon's lover that unfortunately cannot have children. Yet Sally loves and raises Percy as if he were her own.

Rose and Lissa decide to surprise visit him, in which they end up asking for help. When explanations are in order, they (The 7+Nico, Thalia) can't help but be skeptical as to why Artemis (who is with them) and Percy have a personal experience of the new danger, TOGETHER, ALONE but don't want to talk about. (or more specifically what happened afterwards)

Percy has known that Annabeth has cheated on him for atleast a 5 weeks now. She thinks he doesn't know but he found out.
With their relationship practically over, Percy lays his eyes on someone else, while still 'dating' Annabeth (trust me there is no love from him)
Annabeth being oblivious keeps cheating and eventually gets caught, by the whole camp.

How do you think the camp reacts to Percy not really caring? (They don't know that he already knew)
How does the people in the meeting react to a danger of supernatural and dangerous vampires, and not Greek monsters?

I don't own PJO (Rick Riordan does) or Vampire Academy
I only own the plot. And if I'm correct, I haven't seen a story like this so....

Enjoy!! :)