Wisdom's daughter walks alone.
That didn't just mean without other people, Annabeth realized. It meant without any special powers.

I'm so glad you're here," Aphrodite said. "War is coming. Bloodshed is inevitable. So there's really only one thing to do."
"Uh... and that is?" Annabeth ventured.
"Why, have tea and chat, obviously

His face was gaunt, scraped and bloody, his hair dusted with cobwebs, but when he locked eyes with her, she thought he had never looked more handsome.

Percy & Annabeth

She pulled away. “I missed you, Percy.”
Percy wanted to tell her the same thing, but it seemed too small a comment. While he had been on the Roman side, he’d kept himself alive almost solely by thinking of Annabeth. I missed you didn’t really cover that.

When Athena falls in love, it's purely intellectual. It's a meeting of minds. The purest kind of love.

Very slowly, using only two fingers, Annabeth drew her dagger. Instead of dropping it, she tossed it as far as she could into the water.
Octavian made a squeaking sound. “What was that for? I didn’t say toss it! That could’ve been evidence. Or spoils of war!”
Annabeth tried for a dumb-blonde smile, like: Oh, silly me. Nobody who knew her would have been fooled. But Octavian seemed to buy it. He huffed in exasperation.
“You other two…” He pointed his blade at Hazel and Piper. “Put your weapons on the dock. No funny bus—”
All around the Romans, Charleston Harbor erupted like a Las Vegas fountain putting on a show. When the wall of seawater subsided, the three Romans were in the bay, spluttering and frantically trying to stay afloat in their armor. Percy stood on the dock, holding Annabeth’s dagger.
“You dropped this,” he said, totally poker-faced.
Annabeth threw her arms around him. “I love you!”
“Guys,” Hazel interrupted. She had a little smile on her face. “We need to hurry.