The conversation they have is: Jan 233: McGee, noticing this, asks for another high-five and Abby smiles big and gives him one. No bomb but still! He is much more comfortable and confident around Ziva than her predecessor, Kate Todd.
McGee "Abby I'm almost done here.
Did abby really date mcgee on ncis?
Abby "Ah! Season When he notices her drinking extra Caf-Pows he says he thought she quit. On the way to the cemetery, we play a dirge. He says not everything and smiles. Also there is a new agent in Mossad,Liat who took the place of Ziva.