Real Housewives of Salt Lake City cast member Mary Cosby says she and husband Robert Cosby Sr. sleep in separate bedrooms.
She made the revelation during part 2 of the RHOSLC reunion show on Wednesday.
The 48-year-old mom-of-one became emotional while discussing her unconventional marriage to her late grandmother's husband -- her step-grandfather.
Mary explained her "arranged" marriage, saying her inheritance was dependent on her marrying her step-grandfather.
"My grandmother told me, for herself, that she wanted me to take her place," Mary said. "Basically, Robert Sr. was 20 years younger than my grandmother. My grandmother felt like she robbed his youth. So she said, 'If something ever happens, I want you to marry one of my girls, because I know that they will be loyal to you and treat you good like you treated me.'"
In an earlier episode, Mary said she delayed consummating their marriage by telling Robert she was still menstruating -- for an entire month.
Eventually the couple welcomed a son, their only child named Robert Jr.
When asked during the reunion if she is "in love" with her husband, Mary replied, "I absolutely think I am."
But she shared that they sleep in separate beds and they have not had sex in the "last few years."
Fighting back tears, Mary said, "We're happy. You can't say or do anything to take happiness away from me. It's hard to get. If you can find that in a man, it doesn't matter where he came from."
"Marriages are hard, they're horrible, they can be a nightmare," she continued. "I have a beautiful one."
"The Real Housewives of Salt Lake City" has been renewed for a second season.
Mary Cosby is upset that she didn't get the chance to explain her "unconventional" marriage to her grandmother's husband before the story hit the blogs.
Mary's storyline was the most riveting of the cast members on Real Housewives of Salt Lake City. The Pentecostal preacher shocked viewers by sharing her private life with her husband, Robert Cosby, Sr., whom she first knew as her step-grandfather.
Mary inherited her grandmother's empire of churches, restaurants and her husband. Before her grandmother died, she reportedly told Mary to marry her husband,
A Faith Temple insider revealed that Mary was already a married woman when she was cleaved to Bishop Cosby. "Mary had a husband before she married the bishop, a year after the death of her grandmother. His name is Dana," said the source.
Mary's storyline is the main reason Bravo TV producer's asked her to be on the show. But before she could tell her own shocking story -- it was all over the blogs and social media.
"I was not expecting it to be dropped on social media," Mary told Us Weekly. "That was more of a disappointment for me because I feel like social media is a place I don't feel comfortable in."
Mary seemed to blame Bravo for leaking the storyline before the series premiere.
"They put that story right there with me," said Mary. "It didn't set it in a good light for me."
Mary said the comments on social media cut her like a knife.
"Sometimes I read it and sometimes I respond back to them and block them," she said. "Then sometimes I read it and [think], like, 'OK, that's your opinion.'"
She continued, "I try to separate it and I try not to put emotion into it. In my mind, I'm not here to make sense. I'm here to tell you, 'This is what Mary is and this is what I'm about.' And this is my story and you don't have to accept it again."
Mary Cosby was only 22 when she married her step-grandfather Robert Cosby Sr., now 62.
The Real Housewives of Salt Lake City cast member said she told Robert Sr. she was on her period to avoid having marital sex with him on their wedding night.
"I'm not gonna lie it was all bizarre. Thank goodness I was on my period at the time and the period lasted about two weeks."
Mary said he repeatedly asked if she was still on her period. She said she prayed on it before eventually consummating their marriage on the 28th day.
Mary's grandmother, Rosemary "Mama" Cosby (pictured with Robert), pre-ordained that Mary would inherit her estate -- including the Faith Temple Pentecostal Church, other churches, homes, restaurants, money, and her second husband, Robert Sr.
When Mama Cosby passed, Mary inherited everything that her mother thought she should've received as her mother’s closest next of kin. Mary's inheritance drove a wedge between her and her mother to this day.
"I was actually 22 when I got married. It split our church. My mom felt like she was the one who should have had all of it and the church," Mary said.
Mary said she was 19 when she last spoke with her mother - her best friend at the time.
As for consummating her marriage on the 28th day, Mary said, "It worked out so good. Like, it couldn't have been better."
Mary Cosby explained her "arranged marriage" to her 62-year-old husband, Robert Cosby Sr., on the series premiere of Real Housewives of Salt Lake City.
As you know, Mary, 47, inherited her family's empire of churches when she married her late grandmother's husband, who is her step-grandfather.
The Pentecostal First Lady, who has been married to Robert for 21 years, explained that her marriage was ordained in her grandmother's will.
"It was kind of in my grandmother's will for us to be married," Mary said.
Robert added, "She said if anything happens to me - Bobby - I want you to marry one of my girls because they'll look out for you."
Check out the series premiere of Real Housewives of Salt Lake City below.