On Friday night’s '20/20' special Bruce Jenner opened up about transitioning to a woman, ending months of speculation about the 65 year old former Olympian. “For all intents and purposes, I am a woman,” he told host Diane Sawyer during the candid two hour sit down interview.

Bruce JennerBruce Jenner was interviewed by Diane Sawyer in a ’20/20’ special.

“People look at me differently. They see you as this 'macho male,' but my heart and my soul and everything I do in life, it is part  of me, that female side is part of me. It's who I am. I was not genetically born that way,” Jenner added.

For the purpose of the interview, Jenner said he preferred the pronoun “he,” and was called Bruce by Sawyer throughout (we will also be using male pronouns in this article). He later declined to say what name he might use in the future, telling Sawyer that if he did the media would never leave him alone.

More: Dr. Phil Backtracks On His Comments On Bruce Jenner's Alleged Transition

Jenner said he felt like he’d been living a lie, ”I'm not stuck in anybody's body. I'm me...Bruce: always telling a lie,” he told Sawyer. “He's lived a lie his whole life about who he is. And I can't do that any longer.”

Speaking about his divorce from wife Kris, Jenner said they might be still together if she had been more understanding. He also added he had kept his feelings a secret during the filming of 'Keeping Up Kardashians' and told Sawyer, ”We've done 425 episodes, I think, over almost eight years now. And the entire run I kept thinking to myself, 'Oh my god!' This whole thing, the one real true story in the family was the one I was hiding and nobody knew about it. The one thing that could really make a difference in people's lives was right here in my soul…"

Jenner also talked about step daughter Kim Kardashian’s reaction saying she’s now the most accepting thanks to her husband Kanye West. “He says to Kim, 'Look, I can be married to the most beautiful woman in the world, and I am...but I'm nothing if I can't be me. If I can't be true to myself.” Jenner revealed “And since then, Kimberly has by far been the most accepting and the easiest to talk to about it.”

More: Khloe Kardashian Describes Jamie Foxx's Comments On Bruce Jenner's Alleged Transition As "A Low Blow"

The father went on to say that his main concern has always been for his children. "Those are the only ones I'm concerned with. I can't let myself hurt them. How do I do this? How do I do this and not hurt my children? I tried to explain to them that as much of your upbringing was 'her' as much as it was the he-side.”

Looking to the future Jenner told Sawyer, “I've got my health. I've got my children. I got family. I got seven grandkids now. I'm actually really excited about the future, about what I could do...I feel like I'm going to be okay. 2015 is gonna be quite a ride.” Jenner’s transition will be chronicled in a documentary series on E! that will begin airing in the summer.