[s4e1] The One With The Jellyfish [ Certified ]

: Ross chooses Rachel over Bonnie but must break up with Bonnie first. Rachel writes Ross a letter that is "18 pages, front and back" detailing why he needs to take full responsibility for everything that went wrong in their relationship. Ross falls asleep while reading it and unwittingly agrees to its contents. When he later realizes what he "admitted" to, they get into a massive fight over the "we were on a break" debate, ending their reunion almost as soon as it began.

Matthew Perry's weight change between seasons is noticeably visible due to the cliffhanger's continuity. [S4E1] The One With The Jellyfish

: Phoebe confronts the woman she thought was her mother's friend, Phoebe Abbott, only to learn that Abbott is actually her birth mother . After an initial period of anger and rejection, the two begin to reconcile and attempt to build a relationship. Memorable Quotes : Ross chooses Rachel over Bonnie but must

: "And by the way, Y-O-U-apostrophe-R-E means 'you are,' Y-O-U-R means 'your!'". When he later realizes what he "admitted" to,

: "It’s not that common! It doesn’t happen to every guy! And it is a big deal!" (referring to the breakup, though it sounds like something else).