This is what happened, IMO. Gibbs had just left, Tony was in charge and he didn't know what to do, so he needed support, and Ziva was the one that he turned to.

^ I agree Dannii!! I added some of the choices for a little comic relief lol! :)

I was unsure which one 2 choose, so i choose the one that made me LOL, bt i agree with Lie_to_Me_123, and nothing happened maybe they just had a couple movies and a couple beers and nothing else, even though i am really intrigued now haha =)

Either this or the piano lessons-- that would be super cute! I watched Untouchable yesterday and she mentions that she could give him piano lessons if he wants. "It might even be fun" says Ziva. I never really thought about that before but I guess it makes sense!

I'm pretty sure that they were supporting each other through the tough time since Gibbs left and they were getting to know each more. However, I've always thought they spent those days having dinner and watching movies. ;)

I truly think this is all that happened, but I'd still love to know & perhaps see a scene/flashback of it.