Arthur is your bestfriend but he acts like your boyfriend. When you two get asked if you two are dating, he would say 'no we are not dating, im just her bestfriend'. But one day, your bestfriend friend flirted with you and occupied your time. Arthur saw this and got jealous, he then wraps his arms around your waist and kiss your neck softly

"She's taken bro, sorry not sorry. Find another girl to flirt and stay away from my girlfriend"

Arthur said with a smirk as he keep kissing your neck