Lynn Hartman says that after she watched the Netflix documentary “Making A Murderer,” she was compelled to write to Steven Avery, whose life story is portrayed in the series. Hartman says she believes Avery, who is currently serving a life sentence for the 2005 murder of Wisconsin photographer Teresa Halbach, is innocent. The two started corresponding, she says, met in person three times and got engaged last month.

WATCH: Steven Avery’s Fiancée Describes The First Time They Met

In an exclusive interview airing Tuesday, Hartman tells Dr. Phil about their relationship, and Dr. Phil cautions the 53-year-old about getting involved with a convicted felon who admits to having a violent past.

WATCH: Is Steven Avery’s Fiancée Worried For Her Safety Because Of His Past?

In the video above, Dr. Phil shares four common characteristics of women who fall in love with men in prison:

Damaged – mentally, physically, emotionally
Fantasy – They tend to approach these situations as though the love is fantasy-based.
Cinderella -- Cinderella aspect to this love.
Rationalize – They rationalize the other person’s behavior.

In addition, Dr. Phil says there’s one more characteristic: hybristophilia.

“There is a category of women who are attracted to men that involve danger – men who are in prison, men who commit crimes,” Dr. Phil says. “It adds an element of that bad boy excitement.”

Watch the video above for more and see if Lynn believes she embodies any of these characteristics. And, watch more from this episode here.