Dani

“So this is where the rivalry started," Percy said.

"Yeah."

Percy pulled Annabeth close and kissed her...long enough for it to get really awkward for Piper, though she said nothing. She thought about the old rule of Aphrodite's cabin: that to be recognized as a daughter of the love goddess, you had to break someone's heart. Piper had long ago decided to change that rule. Percy and Annabeth were a perfect example of why. You should have to make someone's heart whole. That was a much better test.

When Percy pulled away, Annabeth looked like a fish gasping for air.

"The rivalry ends here," Percy said. "I love you, Wise Girl."

Annabeth made a little sigh, like something in her rib cage had melted.

Percy glanced at Piper. "Sorry, I had to do that.”
― Rick Riordan, The Blood of Olympus

“Without you, I doubt Percy could find a way out of a paper bag.'
'True', Annabeth agreed.
'Hey!' Percy complained.”
― Rick Riordan, The House of Hades

“Think positive. Tomorrow you’re off to camp! After orientation, you’ve got your date—”
“It’s not a date!” I protested. “It’s just Annabeth, Mom. Jeez!”
“She’s coming all the way from camp to meet you.”
“Well, yeah.”
“You’re going to the movies.”
“Yeah.”
“Just the two of you.”
“Mom!”
She held up her hands in surrender, but I could tell she was trying hard not to smile.”
― Rick Riordan, The Battle of the Labyrinth

“The last I saw of Percy and Annabeth, their Prius was turning the corner on First Avenue, Percy singing along with Led Zeppelin on the radio, Annabeth laughing at his bad voice.
Alex crossed his arms. "If those two were any cuter together, they'd cause a nuclear explosion of cuteness and destroy the Eastern Seaboard.”
― Rick Riordan, The Ship of the Dead