NCIS, Season 6

Ziva:
Goodnight.

Tony:
Night. [watches Ziva leave]

Gibbs:
Rule number eleven, DiNozzo.

Tony:
I would never date a co-worker, boss. Trust me. I mean, why would you even -- [Gibbs smiles slightly] -- that's twelve. Eleven: when the job is done, walk away.

[...]

Gibbs:
So, what's on your mind?

Tony:
Rivkin's been in town.

Gibbs:
I know.

Tony:
With Ziva?

Gibbs:
The guy doesn't listen.

Tony:
Does that bother you on a professional level or a personal one?

Gibbs:
I'll tell you what. I'm having a little trouble untangling the two.

Tony:
So you are bothered.

Gibbs:
Oh yeah.