Ross and Monica Geller: Sibling relashionship

Ross and Monica may have been the most accurate representation of how brothers and sisters are actually like (in real life). They both went to Lincoln High and are both one of the main characters of the series. Their parents are Jack and Judy Geller.
==== FAVORITISIM ====
Ross is the oldest and most favoured child it is stated in a lot of episodes by Monica of her parents favouritism for Ross and her jealousy, Ross is the star child being the "smarter" and "better" sibling unconsciously using "favoritism" and makes Monica feel left out although Jack and Judy are both unaware of this as for Jack in the episode: The one with the Porche where they pack up their old house Ross mentions to Jack how Monica feels after they find all her stuff soaked up, Though Monica finds out anyways and Jack gives her the Porche, Judy though doesn't find out but a close encounter is shown in the episode The one where Nana dies Twice and Judy states her mothers sense of control freak and how she seemed to be a bit controlling over Judy when she was a young child, being familiar with this situation as that's what she feels for Judy she asks Judy that if Nana was here right now and/or she could turn back time if she would tell Nana how she felt though Judy answers no cancelling Monicas plan to tell Judy how she feels.
==== MONICA GELLER ====
Monica is Ross Gellers little sister and is a control freak, she gets this more likely from her mother Judy Geller, she is a born to be chef and used to be fat, she as well went to Lincon Highschool, her best friend is Rachel whom she departs from after collage but reunites with her on the Pilot Episode and lets her into her life again and teaches her to grow out of her old habits and turns her into an independent non-spoiled girl unlike her old self. She is very distant from her mother and father as she expresses that she feels like she is left out and judged by her parents especially Judy Geller.