On April 19, 2017, ex NFL star Aaron Hernandez was found hanging in his jail cell at the Souza-Baranowski Correctional Center in Massachusetts. It was reported that he jammed his cell door, had the words “John 3:16” on his forehead and had written the same Bible verse on the wall of his cell. Investigators said they found three handwritten notes next to a Bible.

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Shayanna Jenkins-Hernandez, Hernandez’s fiancée and mother of his 4-year-old daughter, says, however, that she doesn’t believe that her high school sweetheart committed suicide.

“It’s just not the Aaron that I know. I think that if he would have done something like this, it would have been at his worst, and I felt like it was looking so bright,” she tells Dr. Phil in part one of a two-part exclusive interview airing Monday and Tuesday. “I don’t think this was a suicide.”

WATCH: Aaron Hernandez’s Fiancée On His Suicide: ‘I Never Would Have Suspected Something Like This’

Dr. Phil notes that the former New England Patriots teammate, who was serving a life sentence for the 2013 murder of Odin Lloyd, had just been acquitted of two murders from 2012 and was appealing the Lloyd conviction. “This had to be the high point of high points in a long, long time,” he says to Jenkins-Hernandez.

“I agree, and that would make me doubt that he took his own life,” she replies. “He was very positive, so excited to come home. I spoke to him the night before they say this incident happened, and he was so, ‘Daddy’s going to be home,’ and he’s speaking to Avielle, ‘I can’t wait to sleep in the bed with you guys, and I can’t wait to just hold you and love you.’ There was no indication at all of such events.”

WATCH: Aaron Hernandez’s Fiancée Says He Loved Their Daughter, ‘She Was Very Much A Daddy’s Girl’

On Monday’s episode, Jenkins-Hernandez recalls the last conversation she had with Hernandez and discusses the note he left for her and why she has questions about it. And on Tuesday, Jenkins-Hernandez responds to rumors about the football star’s sexuality and his alleged intimate relationship with a fellow inmate. Check here to see where you can watch.

‘I Want Answers’ Says Shayanna Jenkins-Hernandez, Fiancée of Aaron Hernandez