Yes, he really did fall in love with her.
And he may have had a hard time.
But still, no matter what, he just treated Ziva wrong and that wasn't right.
If he couldn't/wouldn't love Ziva, then he should just have acted professional, but he did nothing like that.
His whole working relationship suffered because of how he acted.
And no, Ziva shouldn't be the one picking up the pieces, even less when he still acted like a jerk after Jeanne was gone. Like it was Ziva's fault.
I still felt more sorry for Ziva.