Percy
Even though watching Order suffer from his sister's wrath was hilarious, Percy was still fuming with anger at the news of Annabeth and Luke. He was angry at Annabeth for lying to him, angry at Luke for stealing his girl. When Luke had died in the second Titan war, Percy had felt a bit relieved that he no longer had to fight with Luke for Annabeth. But he did not want to upset Annabeth, so he had kept the secret for a while. Percy had been so sure that he and Annabeth would be forever, but it seemed that Annabeth had never really loved him. And now she was off making out with Luke. Percy was furious and he was not going to wait for the gods to start this war. He was ready to fight, ready to satisfy his hunger for revenge. "Perfect, then." Order commented, reading Percy's mind. "Me and Chaos are planning a little surprise for the gods to celebrate the defeat of the titans."

(Not gonna tell you who)
"Urgh." He groaned as the earth sifted
into shapes to glue his broken pieces together. He stood up to ten meters tall, towering over his siblings who were also starting to reform. He cackled evilly, whispering, "The Titans are back."

Luke
"Hi Annie!" Luke called to Annabeth. Luke gave her a kiss on the cheek, making her blush a deep shade of red. Annabeth had dumped Percy and decided to go with Luke after the war with Gaia. Now, in Olympus, Luke could never have been happier with the girl that he had wished for his whole life.
Zeus and the other gods were in shock. Poseidon and Athena was telling them about their engagement which they had been deciding since Amphitrite ran away. Poseidon and Athena had always been mortal enemies but since Annabeth and Percy had started dating, they seemed to have gotten over that.
Hera was smiling, glad that the two biggest enemies of the Olympian family had become friends.
Luke chatted with Annabeth, as they drank punch and nibbled brownies. Annabeth told Luke about all the adventures that she and Percy had had while Luke was...well, dead. Luke laughed at her sense of humor as she told of when Percy had been turned into a guinea pig.

Athena
Athena had to stifle her laughter. Zeus looked like someone had stolen his throne and was dancing with it on his back right in front of Zeus. Poseidon was about to burst trying to contain his chuckles. Athena gave her husband-to-be a light kiss. Zeus' eye twitched and he looked ready to crush the whole earth with a pinky. Then, Hades caught Poseidon's eye an it was all over.
The brothers boomed in laughter as they watched Zeus' face. A smile appeared on Hera's face as she saw the two biggest enemies in the Olympian family become friends through marriage.
Athena leaned on Poseidon's shoulder, imagining the wonderful and powerful kids that they would have. She thought about the two demigods who had brought Athena and Poseidon together, Percy and Annabeth. Athena felt her face flush with anger. She had thought that her daughter had loved Percy truly and fully, yet when he was gone for just a while, she turned her back on him.
At that moment, Athena's thoughts were demolished as a loud booming entered the throne room.