I think that in Fannysmackin Nick was angry because that his boyfriend got beat up, and he had to stay on the case and couldn't go and be with him. i think that Warrick was worried about him too, but I'm not sure whether he knew about the 2 before then. I'm indifferent on that, but maybe in my mind that's the point where all the other little snippets Warrick's raised an eyebrow at really clicked. I've not see For Gedda, but every time I see those looks, I just can't wait to see that moment- sad about the ending though.