Is this manipulative behaviour?

The Ex N and I work together, in the same office. I'm actually doing well, NC is working, I blank him completely and if I absolutely HAVE to speak to him it's civil, never friendly.

I've spoken to my manager who is supportive.

Today, though, I feel angry...for the three years that we have worked together he has consistently been negative about EVERYONE, all our mutual colleagues including members of his own team. His behaviour has been difficult at times and people have found him hard to work with. Since we have split, he has made a increasingly BIG show of being Mr Nice Guy, talking in hushed tones with colleagues and giggling, particularly his manager(female) who was the one person he always slagged off the most.

I wondering whether his continual criticism was actually designed to control me when we were together as I often found myself feeling pressured to agree with him, or if I told him I felt he was being negative and it was bringing me down, it would lead to an argument as he felt I should be supportive of HIM.

This is not making me have any regrets whatsover, I realise its games, I guess I'm just trying to resolve it in my own mind, and it makes me so MAD.

Manda xx