LUKE: You know what I mean, Rory and Jess, Jess and Rory. I think this is great. Don’t you think this is great?
LORELAI: I think Rory’s seventeen and it’s probably about time for a Jess.
Rory’s birthday is in October, and it’s now November, so Rory is actually eighteen now. Her eighteenth birthday apparently passed without fanfare, or her mother even remembering it!