He saw you and just decided he was your boyfriend with no input from you. He's a dangerous freelancer for the mafia and is utterly convinced that you are together. He comes and goes as he pleases and no matter what you do, he doesn't leave you alone. At night he even touches you while you sleep and so far you haven't found out... yet. Oh and don't bother getting the police involved because his contacts pay them off so no one is there to help you.