Personally, I don't think anything but the sharing of a bed happened in Paris... Even though NCIS agents seem to have a history of doing naughty things in the land of love *cough*Jibbs*cough*.
I LOVE this pairing, but I'm actually kind of afraid for anything -big- to happen, ya know? I'm afraid it'll screw up the dynamic of the show. I do quite enjoy their banter and the occasional cute thing we get from them though. It's enough to keep me going. <3