roommate trouble...HELP

(In college) My roommate has been a real bitch. Don't get me wrong I love her, and she's a sister to me, but whenever I bring my bf over literally just to spend the night with me, she gets so offended and butt hurt. Btw I ask her EVERY SINGLE TIME, if my bf coming over is ok. And I don't understand wtf her problem is. My bf comes over every Wednesday night for sushi Wednesday and even BUYS HER sushi to be nice and engages in friendly conversation with her. I just talked to her about him coming over because she asked for a "schedule" of when he's coming over. I complied and made one for her. She then says she just isn't used to her roommate coming with a "package" (my bf). But it's also my room too?? I shouldn't even have to ask her if it's alright for him to come over but I fucking accommodate her stupid bitch ass. Please tell me what the flying fuck I need to do to make her fucking realize, this room is mine too and she needs to stop being a little pussy bitch to my bf who's nothing but nice to her.