I think we've been hooked into the never-ending triangle. Kate seems to 1) never be able to make up her mind, 2) always seems to want the one who is the least interested at the given moment in time.

I think the writers just like to keep us guessing. Remember when Sam and Diane (Cheers) finally got together? Fans accused the show of jumping the shark.

__________________
Save the earth. It's the only planet with chocolate.