Yeah, I watched "Run Away Little Boy" this morning too, and didn't understand where Sookie was coming from with the "He's been waiting for you" thing. Yes, Lorelai was engaged, but Luke knew her and was obviously into her way before Max ever came into the picture, and in this episode they make a point of saying that it's been several months since the Max breakup. So what has Luke been "waiting so patiently" for? Sack up and ask her out, Grumpypants.
That said, I do think S1-early S2 Luke was mostly sweet and likable among the rants. Even in this ep when Lorelai is asking if she can depend on him and he immediately says that she can, it's nice. It's too bad that he got grumpier and meaner as they finally got together. I know it's said that the actors didn't like each other, but don't the directors and producers have a say in how their actors are behaving? Like, "Hey Patterson, maybe you think Lauren Graham has bad breath or something, but you need to act sweet and in love with her NOW, or Luke may meet a terrible accident with his deep fat fryer."