Wow - so much happened in this episode.
First of all - Rory was really sad to see Logan go to London, not just because of the fact that he was leaving, but also because she was convinced that Mitchum only did it out of spite, to cause damage to Rory and Logan's relationship. After a bit of a show-down in the elevator, Mitchum gets Rory to see that it has absolutely nothing to do with her, and everything to do with Logan. Mitchum wants Logan to grow up, and is convinced that going to London will do this. Rory silently agrees, as it is obvious from previous episodes that she also thinks he could use a bit of growing up... :-) The scene where Logan and Rory says goodbye is soooo sad, and I couldn't help but cry a little... It was a really nice way to end things.
Then to the whopper - Lorelai and Luke!!! First you can see that things aren't going to well, Lorelai is avoiding Luke, and doesn't want to see him. She's beginning to realise that she has been putting her own wishes too much on hold in their relationship, but is afraid of telling Luke she wants things to change, because she doesn't want to loose him. After a friday night dinner at the parents, she ends up talking to the girl Emily tried to set Christopher up with, who just happens to be a shrink. She puts things into perspective for Lorelai, and she realises that she has to do something about it. She returns to the diner only to give Luke an ultimatum: They have to elope to get married now, or else it's over. Luke is confused, and tries to slow things up, and thereby ends up saying no to the ultimatum. Lorelai then realises that she just broke up with Luke, leaves, showing that she is willing to put herself first. Then she shows up on Christopher's door step and end up spending the night with him... OOoopppsss... Not good... Season 7 is going to have a lot of things to work out... :)