i am sorry this has happened to you. i imagine that you have had abuse in your past that has been triggered for this to have had such an impact on you. if you dont have a counselor, perhaps scheduling an appt to talk about what happened will help you sort out your feelings. you have done nothing wrong and in no way solicited this behavior from this gentleman. i imagine his grief and discontinuing his medication impaired his judgment to the point of misinterpreting your friendly banter and causing him to do what he did. i am sure if not for his impaired mental state he would have not done this to you and meant no ill will or harm to you and would be mortified that he has caused you such pain.