One friend testified at the trial that she admitted to having sex with a man she met at a bar in Texas four days before the shooting.
She was arrested after the gun used in the shooting and other evidence was found inside a clothes dryer at the home.
In the victim impact statement, Trent Bryan also wrote about his embarrassment over the revelations of his mother's affairs.
“I have a hard time facing it most days,” Trent Bryan wrote. “I am hopeful with time my dad will only be remembered for the man he was and not for the details behind his death.”
He wrote that he has been emotionally torn.
“I have struggled with knowing what the right thing to do is, and I have been pulled in many directions,” he wrote. “I have wanted to protect my mom from hurt & suffering but at the same time I wanted justice for my dad & knew he deserved that.”
He also wrote, “My 5-year-old son Jackson frequently asks questions and I don't know how to respond or what to say to him. I don't want him to forget his Pappy but at the same time I want to avoid the question of where his grandma is and why she is there.”
Rebecca Bryan did not testify at the trial. Jurors did hear a recording of the interview she had with police at the hospital a few hours after the shooting.
“We were quite in love,” she said in the interview. “He's like the most amazing husband.”
After the sentencing Tuesday, the current Nichols Hills fire chief said he was just glad the case is over.
“That's the main feeling,” Terry Hamilton said.
He said the tragedy brought Nichols Hills firefighters together.
“It has really made us closer as a fire department,” Hamilton said. “The first three or four months were real difficult. They were hard to cope with and deal with, with a thousand things that we had to do, but we got through that.”