Mairead Philpott is telling the court that many people describe her relationship with husband Mick as "unconventional" but that "for us it was a happy family".
She says she described Mick as her "guardian angel" when he arrived in her life. She said he "cared for me and loved me and made me feel safe".
Mairead says she was "scared" of losing Mick when his girlfriend Lisa Willis came on the scene.
She added that their family had grown for "love" and not for the benefits.
More top news
Four in 10 European doctors are considering leaving the UK following Britain's vote to leave the EU, research suggests.
Eating 10 portions of fruit and veg every day could could significantly reduce the risk of heart disease and cancer, researchers say.
North Korea has blamed Malaysia for the death of Kim Jong-nam, the half-brother of North Korean leader Kim Jong-un.