Series 3, Episode 16
A more serious episode unfolds the morning after Rachel calls a temporary halt to her relationship with Ross, but that's before she finds out he has had a one night stand with a strange woman. As they argue it out at the apartment, Monica, Phoebe, Chandler and Joey get themselves trapped in the bedroom, not wanting to reveal that they are there are earwigging the whole situation.
This episode has it all: it will make you laugh, it will make you cry. Full of drama, and some good acting from Aniston & Schwimmer.