Monica and Ross Geller are characters from the popular TV show Friends who are portrayed as siblings but are actually played by actors Courteney Cox and David Schwimmer. While Monica was jealous of Ross as a child, the show depicts their relationship evolving over 10 seasons from 1994 to 2004 into one of siblings who are also close friends, with Monica as a neat-freak and Ross as more clueless and gullible.