The couple had only been married for two years before they called time on their romance and they had a young son, Hudson, to think about too.
The Christina in the Country star announced the breakup on social media and wrote: "Ant and I have made the difficult decision to separate. We are grateful for each other and as always, our children will remain our priority."
She added: "We appreciate your support and ask for privacy for us and our family as we navigate the future."
Ant confessed it wasn't easy for him and told People: "It hit me hard. The impact on me, my sleep, my diet, my stress, it showed.
"But I reached this turning point where I was either going to dwell in the darkness or I was just going to slap myself around the face a few times and say, ‘Wake up; you’re incredibly blessed. Focus on all the great things."
While they've both had Hudson, three, at the forefront of their minds, it's not been an easy road.
Neither has spoken publicly about the personal reasons behind the collapse of their marriage but Ant did also tell People: "When my divorce went through, I packed up my clothes and moved. I walked away completely and left everything there."
A bitter custody ensued and wasn't settled until December 2022 when it was agreed that they would "continue to have joint legal and joint physical custody" of Hudson, as they previously agreed upon in June 2021.
He made explosive claims in court documents, in which he accused his ex-wife of being an unfit mother. He also claimed she had been negligent when it came to their medical safety.
He said his girlfriend, Renee Zellweger, had to halt production on a movie project due to exposure to COVID-19 from Christina, who had not disclosed that her family had contracted coronavirus.
Christina's legal team slammed his claims that she didn't spend enough time with Hudson and said she was "shocked" at his allegations.
The couple may no longer be friends, but they are now successfully co-parenting Hudson. Christina remarried in 2021 to Joshua Hall and shares her two other children, Brayden, seven, and Taylor, 12, with ex-husband, Tarek El Moussa.
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