LORELAI: You know what, I’ve spent a lot of time and energy fighting the whole Jess thing. Rory’s made her choice, I want her to be happy. I’m just hoping for the best at this point.
LUKE: Very romantic.
LORELAI: Says the man who yelled “Finally!” at the end of Love Story.
The film Love Story, previously discussed.
The ending of Love Story is that the female lead, a very young woman, dies of a terminal illness. So Luke was shouting out in relief that she was finally dead. A bit of sly black comedy.
The Annotated Gilmore Girls 