does catherine have a thing for warrick?

Yes, she had a bit of a crush on him. She even 'fessed up to it in a later episode, saying something along the lines of her having a fantasy about them, and being disappointed when she realized that it would never happen (when he got married). It really hasn't come up since then in a show.

theproperator's response is informative, I was not able to notice that in the previous episodes! Hmmm, need to review again.:) Warrick got married to a lady working in the office as well, right?

But the way I viewed their relationship, is that both Catherine and Warrick have 'troubled' pasts, like, Catherine dances to earn, while Warrick gambles, and both have already overcome their pasts and were able to move on.

I guess that is why Catherine kinda looked at Warrick differently.

Cheers!

lol! seen this too..but I don't know, she does look like, but you know how Catherine Willow act.