Monica Geller altered the trajectory of the entire series, having life-changing effects on its characters. Summarizing the role of Monica in the series, Martin Gitlin wrote in his book "The Greatest Sitcoms of All Time" that while her friends "were ... just out to make the most of their social lives", Monica "sought to keep the others in line" while searching for "Mr. Right", who surprisingly turns out to be close friend Chandler. Several years before Monica and Chandler became romantically involved, Cox once joked in an interview that if her character were to ever have sex with another main character, it
Monica Geller up getting married, which just goes to show that some one night stands are meant to last." Monica and Ross' relationship was also influential. According to Kriti Tulsiani of IBNLive, the characters "provide a perfect exception to the myth that one cannot find a best friend in their sibling particularly when they are of opposite sex ... they have broken all the conventional boundaries of a brother-sister relationship." PopSugar ranked Monica and Ross fifth on the website's list of "The 9 Best Sibling Relationships From '90s TV" Immediately established as one of the show's primary settings, Monica's large Greenwich Village