Katy Perry on Russell Brand Divorce: Nobody Knows What Happened Except Us [VIDEO]

Katy Perry broke her silence on her divorce from British comedian Russell Brand in a cover story in the Hollywood Reporter and in an interview with Jay Leno Thursday.

Although the singer opened up about breaking down in tears, there is one aspect of the separation that she will not share with the public.

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"Nobody knows what really happened except the two people who are in it," she told the magazine.

What Perry did say was that she touched her "lowest point" in life when Brand filed for divorce after 14 months of marriage.

"There were times when what was going on in my personal life was so overwhelming that I had to bend over to let those tears fall straight out of my eyes and not my false lashes just as I'm about to go up on that ramp and sing 'Teenage Dream,'" Perry told the magazine.

Separately she told Leno on "The Tonight Show" that she felt she had to include scenes that show her dealing with the divorce.

"I think that if you went to see the movie and it was completely avoided you come out of that theatre going, 'Hmmm...That's strange, I know something else did happen at that time in her life last year," she told Leno.

"I wanted to handle it very delicately with the most integrity I could possibly have and show people that like 'Look yeah I'm going through some of the same situations that half of America goes through', and somehow I landed on my feet and you don't have to lay down and die even if you feel like you're going to."

Perry included scenes in the movie where she is crying and having intense moments, and she admitted it was difficult to go back and watch them.

Perry is promoting her documentary "Katy Perry: Part of Me 3D" which debuts on July 2.

Watch her interview on Jay Leno below: