Taking to Twitter on Tuesday evening, Brian announced that he and wife Vogue Williams have split up.
"It is with sadness that Vogue and I have made the tough decision to go our separate ways," Brian wrote in his message.
"We will always care greatly about each other, remain friends and we wish each other all the very best for the future.
He added: “We have nothing else to say on the subject and would like to thank our friends and family for their support during this difficult period.”
Vogue shared the same message with her own Twitter following of almost 60,000.
She accompanied hers with a simple image of a heart broken into two pieces.
Dannii Minogue was quick to send a message of support, tweeting: “sending you both lots of love.”
The couple have been married for almost three years, after tying the knot in September 2012. Brian told the Belfast Telegraph at the time that it was “love at first sight”.
He said: “We instantly clicked and talked non-stop for eight hours the night we met and I proposed after eight months.”