The former Celebrity Big Brother winner announced the news that she had ended her engagement to the cage fighter on Twitter this afternoon, stating that she had "no option" but to finish it.
She told her followers: "Unfortunately I have had no option but to end my relationship with Alex."
The news comes after Alex was arrested at the couple's home earlier this week after a "disturbance", which saw him try to enter the house.
The couple have been blighted by reports they were on the rocks following the birth of their daughter Dolly earlier this year.
They first got together in 2011, and Alex soon proposed on live TV in that October.
A spokesperson for Chantelle was unavailable for comment when contacted by HuffPost Celeb.
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