Question. Sorry very long

Do you guys and girls believe you should have friends when your in a committed relationship. Like should you be able to have friends and hang out is what I'm asking. My fiance says it should be just him and me all the time. But I'm a very social person and I feel very confined like I did remove social media for him but he just idk I guess I'm just like why would you want your love one to feel so lonely. Like I literally have to be friends with a co worker of his but he has to be there. Like his sister said about a bachelorette party and he automatically said I'm going to have to be there. Like wow really your going to have a bachelor's party he said he'll go out but my party had to be at the apartment of ours. Like what??