I have to hold my tongue around my sister alot because of some of the things she does, and sometimes I end up blowing up on her, and it makes things worse. She is 21 and extroverted (outgoing, and she chooses to be obnoxious) while I am 20 and introverted (keep to myself unless it's close friends or family). She loves to party. I hate to party. She thinks she knows everything and talks down on me all the time even though I have always been more into learning and academics. I can't have an adult conversation with her without her always saying she's right, and I'm wrong over a subject. She is a cheater and actively cheats on her boyfriend of three years. She brags all the time about how many "bitches and niggas" (her words) want her. Everytime anyone glances or happens to look at her in public, she starts flirting and saying the person wants to get with her. I have always been loyal to a fault, and I am always honest with my husband, but she brags to me about cheating all the time, and when I try to say something about her breaking up with her man then because it is unfair to him for her to be cheating or getting in an open relationship, she gets very mad. I always wanted a close relationship with my siblings but sometimes I just want to give up because I can only take so much of her bs. We are just different in every way.