"The One With Ross's Denial" is the third episode of the sixth season of Friends, which aired on October 7, 1999.
Rachel is looking for a room and wants to move in with Phoebe, but Phoebe tells them that she already has a roommate, Denise. Joey offers her Chandler's old room, but scares her by talking about "naked Thursday". Ross hasn't told Rachel that they are still married, which leads to conflicts between him and Phoebe, who says that he loves her. Ross denies having feelings for Rachel and says he only hugged her for comfort. Joey places an ad in the paper for a "female roommate, non-smoker, non-ugly", but no one suitable reacts. Rachel also still has problems finding a room, which results in Ross offering her to move in with him, just seconds after he promised Phoebe that he wouldn't do anything stupid.
Monica and Chandler have a fight about what to do with the Rachel's old room, which is spare now. Monica wants to make a beautiful guest room out of it, while Chandler wants to make it a game room. Chandler agrees to drop the idea, however the argument flares up again when Monica reveals she doesn't want Chandler to bring the barcalounger with him and they decide to blow off the whole moving-in thing. However, Ross (desperate to have Rachel move in with him) convinces them that it is just silly: love is more important then a stupid room, after which Monica and Chandler make up. However, when Rachel opens his eyes by talking about dating other because and how awkward that will be, he tries to split them up again, but that horribly fails. In the end, Monica sees Chandler's point and makes a space for the barcalounger but draws the line at a huge sign saying 'Merge' above their bed.