namjoon possessive

namjoon and you have been a couple for 8 years, but you have been noticing that namjoon has become possessive and toxic, in that case, you are walking down the street, when namjoon notices that a boy is staring at you because of how attractive you are and namjoon tells him:
-why are you looking at my wife asshole

namjoon starts to cover you with his jacket

Y/n: Namjoon calm down darling you know I'm yours