But its wrong that a guy is insulting you, even if its jokingly, in front of his family member. This is a standard guy behavior. If you find your boyfriend nagging about his position in your life way too many times, you might want to know whats wrong! Maybe when he ask if his sister can come next time maybe say I just want it to be us for today if thats okay. Pestering him takes away your dignity and will make you look desperate. Why is the default that you all go? I feel like Im tagging along and unwanted. He wont understand the issue as he is disrespecting you by not asking for your preference and paying little attention to you but rather he will interpret it as you trying to question or influence their relationship. It doesn't get better. Couples need time ALONE TOGETHER. //