In S1E7, Lorelai finally confronts Rory about her kiss with Dean. Lorelai says, “You didn’t think you were going to be able to keep it a secret, did you? You were making out in the market.” Rory protests, “We weren’t making out. It was just one kiss.” Lorelai reponds, “Yeah, well, by the time that gets to Miss Patty’s, it’s a scene from ‘9 1/2 Weeks.'”
“9 1/2 Weeks” is a 1986 romantic film about a dysfunctional sexual affair between a Wall Street broker and an art gallery employee.