walks on the beach. every evening, before heading back to his cabin, percy would take a short walk on the beach, just to unwind. slowly, you'd begin to join him on those walks, and it would be a common occurrence for the campers to see you two strolling along the beach
flowers every morning. percy would usually handpick a few flowers that he'd see in the morning, handing them to you with a little bow and cheeky grin
amusement park dates. percy loves adrenaline, and he'd love to take you to amusement parks, the two of you trying to see how many rollercoasters you can go on before the day ends
forehead kisses. percy greets you with a forehead kiss every morning, followed by multiple more throughout the day. it's his little way of promising you that he's going to be there for you, forever
linking your pinkies. the two of you often hold hands, but more than that, you've started to link your pinkies together. especially if you're sitting down with your friends, and percy just wants you close to him, he'll loop his pinky through yours
learning about the ocean. percy just knows a lot of things about the ocean, and whenever you two are watching a movie with the ocean, he's always commenting things that most people don't know (it makes watching moana a mission)
disney movie dates. especially when the two of you are babysitting estelle, you guys launch into a disney movie marathon, singing along to the songs at the top of your lungs, dancing together, and making estelle laugh
dancing in the rain. percy can stay dry during the rain, but he'll allow the rain to soak him as the two of you dance along to an invisible song only heard by each other