Have you ever been sucked in by a sociopath?

I suspect my ex boyfriend is. He has no boundaries of how fake he will be to get you to like him. So much so that its almost impossible to know what is actually real about him. There were a lot of other red flags especially the constant lying with no remorse when caught in his lies. I do know now what to look for, he was too good to be true in the beginning and there was a reason for that.