I'm sorry, but I hung up at "32 years". You can give him an ultimatum: Either move out of your parents place or forget about me. He's old enough and in the worst scenario, he could find a room to rent elsewhere. If he is unable to do this, he has some serious mental issues. We are not talking about a 20ish year old boy here. We are talking about a 30 something man. At that age, he needs to stand up and take actions.
Writing and making it into movies can happen even at that age, but it certainly won't happen if he stays home where he is brought down to his knees and told that his dreems are futile.
By the way, when moving out, he doesn't, nor should he, tell his parents about you. That is a seperate battle perhaps for later. For now, he needs to fade, distance himself from them without getting disfellowshipped.
Might sound harsh, but you don't have to accept it, its just an opinion. In the end, its your life and his and you choose to do what you want with it.