Vicky, who also works as Abz's manager, broke the sad news in a statement this afternoon and thanked fans for their support.
She said: "Words cannot express my sadness today to have to tell you that Abz and I are separating after 5 years together.
"I'd like to thank all the #5ivers and #Ateam for the love and kindess you've shown me over the years and wish you all the best in your futures. Vicky."
In last year's Big Reunion, Abz revealed how he had got together with Vicky after splitting with 5ive and hitting rock bottom.
Recalling his struggles with drink and drugs, Abz said: "She saved my life in my eyes because I was on a road to self-destruction."
Speaking to Vicky in front of the cameras, he added: "It was just before I met you that I was on my way down I guess."
Vicky replied: "It was like there was a bit of a demon...something dark around you. It was literally like Jekyll and Hyde."
Abz and Vicky recently bought a run-down cottage in Lincolnshire and were in the process of renovating it together.
Earlier this year, we also revealed how Abz and Vicky were in talks with TV companies after they began filming their own reality show, called Da Gud Life.
Celebrities who have sadly split in 2014:
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