I don't know about you but have noticed they show through the entire show Nick and Catherine alot together. Also that kiss on deleted scenes in the pilot episode was so "steamy" you would have to be dumb to fall for there is "no romantic tension there"thing.My opinion is that Nick and Catherine should go out together. I was watching this one movie trailer for csi and it shows Nick and Catherine dating and how there work is forbiding there relationship it is like the perfect Romeo and Juliet story.I still am really wondering why they did not make them a couple.It was so clear in season two and five there was some flirting going on there.Like in the episode Grave Danger when there in the ambulance Warrick doesn't take of his glove and Catherine does to hold him because she is torn up inside!Comment if you agree with me.