IM GETTING SO TIRED OF MY COUSIN COMING AT OUR HOUSE ALL THE TIME!! What is wrong with me?

My little cousin has been ccoming over EVERY WEEKEND for the past three months! I love him but he needs to go back to his house. He has a home. My brother, older cousin (my lil cousins uncle), and my parents don't have a problem with it. He ALWAYS comes over every Friday and stays until Monday. Out house isn't the same anymore. We always have people over. Never had a quiet house. Never anymore. He lives with his friend and his girlfriend and two kids.

My older sister said, "Maybe he has something going on and he doesn't wanna stay at his place on weekends. Dont YOU spend some weekends at your besties house a lot? Basically the same thing. Differences is she doesn't want you to leave which is sweet. Sometimes you gotta make sacrifices. You might as well get used to it. I think you're the only one with the problem. You're being selfish Bianca (me) He don't do drugs and bad things so stop trying to kick him out!" Is my sister right about me?

He left Wednesday to go to work and I come home from a busy day at work and he is here AGAIN! Why can't he stay at his house?! I love my cousin but I'm kind of tired of him coming over and staying over every weekend.
My parents aren't doing ANYTHING about it!!!! 😒😡😒😡😒😠😒😡😒😠😠😠