Jana Kramer has filed for divorce from Mike Caussin.

Mike Caussin and Jana Kramer

Mike Caussin and Jana Kramer

The 37-year-old singer has announced she has split from her husband of six years amid reports he cheated again.

In a statement on Instagram, Jana said: "'It's time. As I try to make sense of a reality I never wanted to believe could be possible again, those words have now become a reality.

 "I've fought y'all. I've loved hard. I've forgiven. I've put the work in. I've given everything I have, and now I have nothing else to give.

"Please know that I still believe wholeheartedly in marriage, love, and rebuilding. I just can't fight any longer. It's time to heal.

"Thank you for all the love, heart, and support, in many ways you have fought on this journey alongside me, and for that I am grateful. I'll always encourage you to continue the good fight, but you can't fight it alone."

A source has told People that the couple will now "focus" on their two kids Jolie Rae, five, and Jace Joseph, two.

Just months ago, the pair released their book, 'The Good Fight: Wanting to Leave, Choosing to Stay, and the Powerful Practice for Loving Faithfully', which offers "spiritual guidance and practical advice for anyone seeking stronger, more fulfilling love."

In 2016, Mike, 34, was involved in a cheating scandal - in which he revealed that he had cheated on her with multiple women - and the pair separated that year.

Mike and Jana also revealed that Mike had filed for divorce at the time they were estranged when he was in rehab for sex addiction.

Jana read from their tome on their 'Whine Down' podcast: "Mike was in rehab and I was in an all-out war with my emotions. Most days, I would push Mike out of my brain and tried to live in the world as if he didn't exist.

"Other days I was too weak to push and I missed him, and I hoped he would be in the audience watching me perform, rooting for me."

And Mike read: "There are so many days during the first year of our reconciliation, after the discovery of my affairs, when we thought, 'What the f*** is going on?' Honestly, most days were like that.

"Needless to say, many of those days were filled with pain and hurt and sadness and despair."