Some television friendships are built on loyalty, shared secrets, and showing up when things get difficult. Others involve sleeping with your best friend’s boyfriend, sabotaging their career, or casually ruining their life over brunch. Somehow, those are often the friendships we find most entertaining. TV writers have given us plenty of duos who spend more time plotting against each other than actually enjoying each other’s company. They might call themselves best friends, but their behavior suggests a very different arrangement. A few even manage to stay close after betrayals that would end most real relationships immediately. Here are 15 toxic TV friendships that make having no friends sound surprisingly peaceful.IMDbBlair Waldorf and Serena van der Woodsen, Gossip GirlSerena slept with Blair’s boyfriend, while Blair publicly weaponized Serena’s secrets against her. Their friendship practically ran on jealousy, revenge, and expensive apologies.IMDbMaddy Perez and Cassie Howard, EuphoriaCassie secretly started seeing Maddy’s ex-boyfriend Nate, turning years of friendship into a spectacular betrayal that neither girl handled particularly quietly.IMDbHannah Horvath and Marnie Michaels, GirlsMarnie once dragged Hannah into a birthday karaoke performance she explicitly didn’t want, a fitting example of their endless competition and spectacularly poor boundaries.IMDbBoJack Horseman and Todd Chavez, BoJack HorsemanBoJack deliberately sabotaged Todd’s rock opera by reigniting his video game obsession, all because he didn’t want his roommate moving out.IMDbTom Wambsgans and Cousin Greg, SuccessionTom regularly humiliates, threatens, and manipulates Greg, who keeps accepting the abuse because being close to power apparently outweighs having any self-respect.IMDbShauna Shipman and Jackie Taylor, YellowjacketsShauna secretly slept with Jackie’s boyfriend Jeff, a betrayal that eventually helped destroy their friendship during an already disastrous wilderness ordeal.IMDbAlison DiLaurentis and Her Friends, Pretty Little LiarsAlison collected her friends’ secrets and used them to control the group, treating blackmail and intimidation as perfectly ordinary ways to maintain popularity.IMDbOlivia Mossbacher and Paula, The White LotusOlivia treated Paula like a fashionable accessory, while Paula involved Olivia’s family in a disastrous theft scheme during their supposedly relaxing Hawaiian vacation.IMDbRachel Berry and Santana Lopez, GleeRachel couldn’t handle Santana becoming her Broadway understudy, and their friendship quickly collapsed into accusations, arguments, and another fight over who deserved the spotlight.IMDbTed Mosby and Barney Stinson, How I Met Your MotherBarney constantly pushed Ted into ridiculous situations, then slept with his ex-girlfriend Robin and actually searched for a loophole in his precious Bro Code.IMDbDennis Reynolds and Mac, It’s Always Sunny in PhiladelphiaDennis enjoys controlling the people around him, and Mac’s desperate need for his approval gives him an almost unlimited supply of opportunities.IMDbBart Simpson and Milhouse Van Houten, The SimpsonsBart routinely drags Milhouse into trouble, takes advantage of his gullibility, and somehow expects him to show up for the next terrible idea.IMDbDaria Morgendorffer and Jane Lane, DariaDaria kissed Jane’s boyfriend Tom, nearly destroying the one friendship that had consistently made high school tolerable for both of them.IMDbEffy Stonem and Pandora Moon, SkinsEffy brought chaos to Pandora’s carefully planned party, while Pandora later slept with Cook, turning their already uneven friendship into another complicated mess.IMDbFleabag and Boo, FleabagFleabag betrayed her closest friend by sleeping with Boo’s boyfriend, a secret that became central to the guilt she carried throughout the series.The post 15 Toxic TV Friendships We Wouldn’t Wish On Our Worst Enemies appeared first on Den of Geek.