I'm glad they address she blew it there. Dean was, indeed, her best boyfriend, it's admitted by Rory herself now. It's one of those things in life you wish you could've changed, but you know you wouldn't be where you are now if that hadn't happened then. Doesn't change the fact you still wish you had that thing or person you lost in your life now. It's a mature conflict that I'm glad was dealt with properly, although I did not love her initial dismissal(that didn't match her altered reaction to seeing him at all).