This person will take "investments" (with no return), only to make your life completely miserable. When you ask for your money back, he will try and be friendly. When that stops working, he will start threatening you. He's full of get rich schemes. Here's some links to his history if you need more specifics.
Http://www.slotexpert.com/article/scam-artist-bilks-$4-million-out-of-investors-34292? CategoryName=Gaming Life&SubCategoryName=