Hyunjin is your boyfriend. The two of you decided to go to the pool on a date.

you lie on an inflatable ring, belly down so that your butt is covered with short bathing shorts in full view of everyone and sunbathe.a moment later you feel a slap on your ass, you turn around and see Hyunjin, he grinned and putting the drink on the side next to you,he said-

“Honey, I wouldn’t want literally everyone to be able to look at your hot butt, I want to be the only one who can.” he chuckles