When do you think Luke and Lorelai said I love you for the first time?

I've been thinking and rewatching and trying to figure it out. Personally, I think I might have nailed it down. It's between Ep 10 and 11 in season five. Lorelai still has the stargazed face at the end of epsiode 10 after their small fight and it seems like the next epsiode their chemistry comes off as more of a married couple. And into the vow renewal it's obvious. Just my opinion, I'd love to hear when you all think it was!