With our friends it’s playful and doesn’t mean anything but with our partner it’s disrespectful. If you say it’s ok for him to call you a bitch while playing he’s going to think that it’s ok all the time and what he will say is you are ok with me calling you a bitch while playing why can’t I do it any other time

There is a huge difference

Depends on the context. If my husband says it jokingly then it's fine, if he says it to hurt my feelings then I don't like it. Same with a friend. Just depends why they're saying it