This has to be bait. Girl, unless there’s something wrong with the bf (criminal record, past creepy interactions, etc), you have to compromise and let her bring him over once or twice a week. Even if there IS something wrong with him, you have to communicate that with her and talk it out. She lives there, she pays bills, she gets to have guests over sometimes.
if yall share a room i understand bc my dorm rm never asked i would just come back from class and he would be chillin in our room, then she would kick me out and send me to our suitemates room so they could fuck. but if yall have your own room more than likely they will be staying in there most of the time, so it seems unfair that you just get to say no to her having her bf sleep over. especially if yall are both paying bills
I 100% get that. Sure yall may be in separate rooms but that doesn’t mean he will stay there. He could walk out at any moment and be there while you aren’t and could mess in your stuff thinking it is hers at any time. It’s uncomfortable as hell. Your home should make you comfortable. They can go to his if it’s not that big of a deal