Ross dating janice
At this point, Janice declares that she does not intend to leave him again, and such is his disappointment that he tells her that he's flying to Yemen for work.
His fake plans, however, get realized pretty quickly, as Janice doesn't leave the airport until she sees him take off on the plane (Chandler ends up asking an old native woman if he can stay with her in Yemen).
Season 5 is when Janice shows up again - this time as Ross' hook-up in The One With Chandler's Work Laugh.
Ross, who is currently divorced twice, evicted and unemployed, has just learned that his second ex-wife Emily is getting married again, and in despair he goes out and stays out all night, running into Janice and hooking up with her.
In the closing scene of the episode, Ross explains to Chandler about his "thing" with Janice, which Chandler finds hilarious until Ross explains how certain rules are understood about friends' ex-girlfriends or relatives (Chandler is currently dating Monica in secret, and after hearing this, decides to let Ross live with him and Joey rent-free and gives him whilst constantly reminding him how he forgave his thing with Janice).Season 6 is the only season in which Janice does not appear on-screen.She is a voice-over on Chandler's mixed tape in The One With Unagi, which he gives to Monica claiming he recorded romantic songs for her after they both forget their Valetine's Day gifts.On hearing Janice's nasal squeaks, Monica realizes Chandler has been misleading her, allowing her to feel guilty about forgetting when he did the same.In Season 7, Janice is dining at Alessandro's when she meets Monica, who is engaged to Chandler.