Yes, my ex. He was warm, open, charming when we met and I was miserable in my relationship and probably close to a breakdown. Had an instant connection and attachment and were talking about love and marriage within days. His (apparent) vulnerability and willingness to support my decisions (which I think now he was subtly influencing) were a big factor in trusting him.
He was very intelligent as well as very open and it was quite a combination for me. I thought he was The One. There was an early indication of what was to come but I let it go, and things were ok till I moved in with him (although the night before we were at a wedding and he accused me of fancying someone else and went in a mood).
There was a momentum about things that I had no desire to stop, so when he started to become moody, controlling and jealous I just saw it as something to challenge and deal with, after all we were a couple and could work it out 
During the course of the relationship he (just a selection) :
Walked out in the middle of the night and when I protested, said that it was "self-protection" and that I was "relentless". This was a week after moving in and I was in a strange town and totally isolated.
Heaped verbal abuse on me
"Affectionately" called me "bitch"
Called me mental
Undermined me
Isolated me
Physically assaulted me.
Regularly threatened me with homelessness when we lived together. If he didn't like how I late I'd slept, for example, he would say I was lazy and order me to start packing.
Manipulated me
Minimised the abuse and said I was to blame
Played the victim very effectively to defuse my anger.
Twisted things I said
Gaslighted me
"Forgot" things he had done to me so could deny them.
Constantly used his past as justification for his behaviour, so that I automatically said that I was sick of being the scapegoat for his anger (thereby accepting that the anger was justified)
Left me when our DD was 8 months for a woman who he was later convicted of assaulting, leading to DV programme. I took him back (I know, I know)
The DV programme was instrumental in making me see that the relationship could never have a future, and that he would never change. I dumped him a few months ago. I'm still working through it.
He has such a convincing public face, so charming, so warm, so affable, that in contrast to the real him...I would not be surprised if he was a psychopath.