be firmly convinced that it was brett parker who not only had the motive bag actually did kill tammy parkerrosecutors wanted the jury to know that the parker marriage wasn't what it seemed. brett had strayed. once with an out of town woman and several times with a local bank teller. lindsay mullins testified that they met, they texted, and that he shared some confidence is about his marriage. >> he said that he slept upstairs and she slept downstairs. >> but the partners had more problems than just brett's affairs. they called ben staples to the sand, a parker family friend. >> what did you know about the march? >> well, as the years went by, she was unhappy. she had conversations, we had conversations. brett did not believe in god, or going to church. that was important to. her >> to them, that revealed another bit of evidence about the parker's shaky marriage. this one a bombshell. >> was your relationship -- >> yes. at >> approximately how urkullu was that. >> about three years ago. >> and did that and? >> it did. it did not end our friendship. we remained best friends until her murder.