I am terrified for my friend

I have a friend who wants her green card and is paying a man $7,000 for the deal. They did not live together but became friends and thought they could save money by living together as roommates. To her it is strictly business and he agreed to this. BUT he has caught feelings and told her and she explained she likes him as a friend but can only keep it that way. He has begun using his position of power against her. It has started off with empty threats of abandoning the whole arrangement to him listening at her door to all her phone calls, to him checking up on her all of the time. He wanted to buy her an expensive gift for her birthday and she told him she could not accept something like that and he flipped out, again threatening her. He has a very low opinion of all women. That we all have mental problems due to every relationship he has ever had and he thinks it is all women and could not possibly be her problem. They are on a lease together so she does not want to just up and leave. It has been getting progressively worse and I think he may be a psychopath. She is worried but not as much as I am. For an example he wrote her the below today. Please write your advice. I want to see what others think and show her as well. He is older than her by about 1- years. What he wrote:Just something I wanted to make you aware of because it relates to you and explains a lot about you. I'm not sending this to insult you in anyway. I didn't write the book. Millennials, or the Millennial Generation,also known as Generation Y, are the demographic cohort following Generation X. There are no precise dates when the generation starts and ends. Researchers and commentators use birth years ranging from the early 1980s to the early 2000s. (so you are what's called a Millennial) Authors William Strauss and Neil Howe believe that each generation has common characteristics that give it a specific character, with four basic generational archetypes, repeating in a cycle. According to their theory, they predicted Millennials will become more like the "civic-minded" G.I. generation with a strong sense of community both local and global. Jean Twenge, the author of the 2006 bookGeneration Me, considers Millennials, along with younger members of Generation X, to be part of what she calls "Generation Me". Twenge attributes Millennials with the traits of confidence and tolerance, but also identifies a sense of entitlement and narcissism (I put the meaning of entitlement and narcissim below) based on personality surveys that showed increasing narcissism among Millennials compared to preceding generations, when they were teens and in their twenties. In case you don't know what Narcissim means: Again I am not insulting you but this is you. You are very conscious of your looks to your boob job, your hair wanting to be blond because you think it looks good on you, to starving yourself so you can be thin. It's just constructive criticism. meaning I'm telling you about yourself so you can realize it and improve on it as an individual. Also I wanted to tell you this because I know you probably think I'm crazy or making up some of the things I say in my head. But the book written clearly states what kind of person I am dealing with in you. Look at this with an open mind. I am not trying to insult you.