Percabeth Honeymoon: The Sea Battle

Percy's POV:

Annabeth and I were at the beach today, everything's great. When Annabeth's away, i saw a girl on the waves. I was curious, so i decided to go see for myself. The girl was standing on the waves, which not mortals can do, she has to have something to do with the sea gods or spirits what so ever. And MAN, she was beautiful! Like seriously gorgeous! She wears some sea shells on her long wavy brown hair, and wears a sea blue dress. She's about my age, and looks like a goddess or an angel.
I walked closer to her. "Who are you?" I asked, trying to be calm.
"Hi Perseus Jackson, i was expecting you," the girl answered with a welcoming voice which made Percy kinda heart warming.
"Why? You know me? What do you want?" I asked.
"You'll find out later," She said seductively, and she even winked at me. She was gorgeous, definitely the most beautiful woman on earth.....
WHAT AM I THINKING!?!?!?!?! I AM MARRIED NOW, I LOVE ANNABETH. WHAT WAS I THINKING??
Focus, focus.
The girl disappeared, leaving me alone on the waves, confused as ever.
Why is she expecting me? Is she really some kind of goddess trying to warn me something? Maybe about an upcoming prophecy or something? But why does she said it seductively instead of dangerously? Is she flirting with me? What? A goddess flirting with me? No way.
But what could it be? Is something serious about to happen? I had so much on my mind right now, i can't think. Who's that girl?

Notes

I'm sorry this is short
Please comment and let me know your thoughts! :D