Lynn Hartman says that watching the hit Netflix series "Making A Murderer" changed her life -- so much so that she's now engaged to convicted murderer Steven Avery. The 53-year-old says immediately after watching the documentary she felt compelled to write Avery, and she says their relationship blossomed.

“The first time he told me he loved me was the first time we spoke on the phone,” says Hartman.

WATCH: A Dr. Phil Exclusive: ‘Making A Murderer’ Convicted Killer Steven Avery And His New Fiancee, Lynn Hartman, Speak Out

After writing each other for months, Hartman says Avery proposed and Hartman finally visited Avery behind bars.

In the video above, hear about their engagement and see the dress Hartman hopes to wear to their wedding!

Dr. Phil's exclusive interview with Hartman airs on Monday 10/3, and on Tuesday 10/4, Avery calls Hartman, while she’s on Dr. Phil’s stage, from prison, where he has lived for the past 11 years.