You and Percy met at Camp Half-Blood obviously, you guys both met when you were twelve and only grew closer since your first quest together. Because you both weren't the best with feelings it took about two or three years for one of you to even think about confessing and even then it took another year for you guys to start dating officially.
You had been together for a whole summer before you went back to camp for the summer and he wasn't there, some son of Zeus named Jason Grace was there in his place. Soon you learned that Hera erased his memories and swapped the place of the two boys so he's currently at Camp Jupiter, the Roman camp.
You, Leo, Jason and Piper all went on the Argo II to try and get Percy back, there was a room for him when he came back and it was full of his clothes from before he got kidnapped obviously. After you guys went to Camp Jupiter and luckily got Percy, along with Frank and Hazel you all went on your new quest, the quest of the Seven with Coach Hedge, a saytr.
Percy had gotten tanner, taller, leaner and more muscler over his time at Camp Jupiter so most of his shirts from before were tighter on him, tight in all the right places as well and you couldn't help but stare at least a little whenever he was doing things! It's not your fault you've spent like eight months away from your very attractive boyfriend.
He was talking about something while on the main deck of the Argo II while wearing a very tight shirt, you were mostly listening but it was hard when he was so distracting!
"Uh, babe? Are you listening?" The son of Poseidon asks and it snaps you back to reality, he caught you staring and called you out on the fact you weren't even listening to him.