Who first found out that monica and chandler were dating
Monica and Chandler go to "fake conferences" so that they can be together without sneaking around.When they come back, they both mention that they saw Donald Trump waiting for an elevator.In the first half, Chandler runs off, scared of getting married.Ross and Phoebe go looking for him, whilst Rachel delays Monica from getting ready as none of them want to tell her about Chandler's departure."In the One with the Boob Job" Joey pays Chandler 00 to help Monica and Chandler out with rent, bills, etc.
Season 10 Episode 11, The One Where the Stripper Cries.
At the end of Friends, Monica and Chandler save him a room in their new house for when he comes to visit (a 'Joey room') but he stays living in his apartment.
ALSO--to find out more about Joey's life after Friends, watch the series Joey.
Joey agrees to pee on her as a good friend after Monica discovers she can't bend that way, and so turns to Joey.
Joey then gets stage fright so asks Chandler to do it.