MAKING A Murderer Steven Avery’s "love letters" to his former fiancée are revealed for the first time - exposing his creepy list of demands and sinister threats.

In one letter to his ex, Lynn Hartman, obtained by Sun Online, the convicted murderer writes out an 18-point list of what she can and cannot do if she is to be his wife.

9 Steven Avery is serving a life sentence for the 2005 murder of Teresa Halbach

Lynn, 53, a legal secretary from Nevada, started dating Avery, 56, in September 2016 after sending him a letter of support, which turned into a penpal romance, before she began regularly visiting him at Waupun Correctional Facility, Wisconsin.

They quickly got engaged and, in one rambling letter - strewn with grammar and spelling mistakes - Avery told Hartman how lucky she was to have him as a potential husband.

Avery, who is serving a life sentence without parole for murdering Teresa Halbach, told Lynn she must destroy or burn the letters.

In one he wrote: "Hello honey. Well I do miss you a lot and love you as a wife. I wish you can see that I am the best guy in your life.

"I do take all your punishment that you give me because I can handle it from my wife.

9 Lynn Hartman was briefly engaged to Steven after becoming his penpal

9 Steven tells Lynn how much he loves her in this letter but he soon turns sinister Credit: Chris White

"When I get out I will give you a good life and I will! And I see you don’t know what to do because you never met a guy like me.

"You can’t handle a good guy like me with all this love for you, and I can hear it in your voice, you can’t believe I am still here with you."

But he soon turns controlling and lists 18 rules Lynn must follow in order to be a "good wife" - including never showing anyone his letters and always answering the phone to him.

He orders her: "When I call you will pick up the phone, you are only a housewife."

Avery would blow hot and cold in his error-strewn letters, once revealing to Lynn: "Well I ben up all night, I can’t sleep at all, I was think about you all night and it really hurts me and I got up and made me a cup of coffee and it was strong. I made it at 5.00am… I am looking at your picture and you look so beautiful and loving and I know you love me and do!"

Yet in another correspondence, he warns his future wife that if she ever publicly revealed the letters, he would wrongly claim to everyone that she and daughter Kamilia were on drugs.

9 Steven starts listing his rules for Lynn in this letter Credit: Chris White

9 Steven appears to threaten Lynn in this letter Credit: Chris White

He writes: "If you tell any one of this letter or any other letters I will go and tell the world you and the kid is on drugs then the ho world world will know that too! So all you have to do is love me and treat me as your husband, and are (sic) life will be fine forever!!!!! I don’t want to hurt you or your kids. So you have to promise… you will help us forever.

"I am hurt that you are doing this to me, not mad, hurt, more hurt you don’t understand what this is doing to me when I love you as the ho world! That’s way (sic) I get mad!"

Avery won the right to appeal his sentence last week - following his high profile involvement in true crime documentary Making A Murderer which showed alleged ineptitude in the original murder investigation and prosecution.

Lynn claims she has been hounded by Making A Murderer fans after they split over her appearance on the US talk show, Dr Phil, discussing their romance.

Steven Avery's 18 rules for ex fiancee 1. You will not use any letters of mine or pictures of mine without my permition from me! 2. And you will not hang up on me no more! 3. You will tell me you loved as your husband and you are going to trust be as your husband, I want to see how you treat me as your husband 4. No way out we are in this and I love you as the world! 5. When I call you, will pick up the phone, you are only a housewife. 6. I do not want to do this to us but I will stop all of this if you treat me as your husband and not a piece of trash 7. I love you as my wife! I am not a piece of trash! You got me doing this I would never do something like this in my life but I have to do this so we can be husband and wife when I get out!! 8. I will call you between the 10-21-2016 too 10-24-2016 I need time so I can feel better, stop being mad at you so I don’t go to the web and talk about you 9. You treat me good and nice 10. I know you don’t want me to go to the web, one kid mite lose her kid so do you want that I know you don’t and I think she will hate you if I want to the web and tell the world this 11. And one more thing I want you to send me a picture of the wedding dress and I want a picture of the white shirt too only for me!! And I want it soon okay honey!! 12. I am so mad at you and can’t think you got me so mad! I have not got so mad at you that I want to go to the world web. I need some time so I don’t get mad then I will call you 13. I will treat you nice to as husband and wife okay! 14. All I want is you and me to be happy when I get out!!!! 15. You can throw out this letter our burn it destroyed by fire this letter 16. All you to do is make me happy and I will make you happy 17. I will not do nothing to I talk to you on the days I said okay or I will not go to the web 18. Don’t ever tell me to never stop calling again

9 Steven has won the right to appeal his sentence and hopes he will one day be set free

9 In this letter Avery tells Lynn to stop "treating him like a piece of trash" Credit: Chris White

His attorney Kathleen Zellner said that Avery had dumped her, when in fact it was the other way round, as Lynn couldn’t take the cyber abuse any longer.

On a postcard - that was returned to her - Lynn wrote: "I cannot continue to be involved with you because there is so much negative for me. They have ruined my life… I can’t do this anymore. I feel like you don’t even want me to leave the house. I am chased, I am harassed, my family is harassed."

In response, Avery said says he is going to write to other women and find himself a new girlfriend.

He said: "So I guess you don’t want me looking at your pictures no more so you don’t want me to think a lot you night! So you took everything way from me, the phone, the pictures, my love for you, so I don’t know what you want me to do. so I am writing to all these other woman and can get a nice one how (sic) love me for me and not money, so I feel good in a good woman for me and love me!"

9 Steven tells Lynn to burn this letter Credit: Chris White

9 Lynn broke up with Steven in this letter, which was given back to her by Avery Credit: Chris White

Now Lynn has joined a Facebook group called "Steven Avery Is Guilty" and says he should be locked up for good, adding: "I believed he was innocent, and I believed in the cause to help free him. I think the rest just snowballed because he called so often and wrote so often, I barely had time to think of anything else.

"He is a lot more clever than people think. He has hundreds of thousands watching his case and two producers as well as an all mighty attorney working for him too. I’m just glad I was strong enough to admit I was wrong and break it off.

"As soon as I stopped answering his calls, the threats started and the true Steven Avery presented himself to me. I know he is guilty as charged and right where he belongs.

"He is not a good man and he is not innocent. He is a violent criminal who is right where he belongs."

In response, Steven Avery's attorney said: "There is no credible evidence these letters were written by Steven Avery.

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"Forged letters have been attributed to Mr. Avery in the past.

"Ms. Hartman needs to move on with her life —develop some hobbies or do something helpful for someone else.

"She has wasted too much time obsessing over a man with a life sentence. Mr. Avery has moved on and wishes her well."