Thalia and you have always been close eventually dating. So when she joined the hunters of Artemis at first it put a strain on your relationship.

Eventually you came up with the agreement of long distance but she would visit whenever she could. Write to you. And everything else.

Thalia decided to take a break from the hunters of Artemis and come home for this Christmas. You didn't know that, but Percy and Annabeth did.

They forgot to get a gift for Thalia so they thought what better gift than her girlfriend, you. So you got wrapped up. That's when Thalia opened the door to see her girlfriend in ribbon. With a small note attached.

Thalia walked over to you and read the note out loud. ''Here is your christmas gift. Hope you like it -Annabeth and Percy. This is gonna be fun~''