To Lorelai's horror, Kirk asks her out on a date after being encouraged by Luke; Emily's lunch with Lorelai at Luke's ends badly; Christopher shows up uninvited at Friday night dinner and quarrels with both Lorelai and Rory before Emily asks him to leave; Rory runs into Jess and they each betray their hurt feelings -- Rory about Shane and Jess about not hearing from Rory all summer; an