At the end of the episode, after Rory has broken up with Logan, Lorelai comforts her by telling her that one day, she'll meet someone that she'll just know is right for her, and she won't want to hesitate like she had to with Logan's proposal. It's a bit strange that Lorelai would give out advice like this to her daughter, given the fact that she allowed herself to marry Christopher impulsively just 6 months earlier. That was an instance in which Lorelai dived into the marriage without hesitation, and look how poorly it turned out. With that in mind, what she is now telling Rory seems somewhat contradictory, because obviously, acting without hesitating did not work so well for Lorelai.
edit: actually, Lorelai hesitated. After the proposal, she said she wasn't too sure of it, and maybe they should wait. Christopher was the one insisting. So, Lorelai didn't 'just knew it was right'.