 The friends can t really spy on Ross and Jill because of his shut drapes, he tells big sister Rachel he just showed her fossil slides, but tomorrow is Valentine s Day; Rachel makes him promise never to date her again; when Jill finds out, she has a big row with Rachel and rushes straight to Ross, clearly planning a live show this time. Joey, Monica and Phoebe are worried Chandler can t cry about sad stories, nor even sad childhood memories, and call him dead inside. Phoebe is outed to Joey at Central Perk by her  biggest fan  as a porn star, and Gunther also knows about her sordid screen career; when they rent such a video, only Joey won t watch it- until Rachel notices it s actually Phoebe s sister Ursula, using Phoebe s name. Ross tells Rachel he stopped Jill kissing him not to ruin any chance of a relationship with Rachel- now Chandler cries hot tears.