The couple began dating during filming of the first series of the hit ITV2 show in November 2010. The mutual decision to end their on-off relationship was announced on Twitter.
"Blacksheep Management today sadly announce that the relationship between Lauren Pope and Kirk Norcross has broken down," representatives confirmed.
"Unfortunately, Kirk no longer felt committed towards Lauren and decided the right decision for both parties was to separate."
The statement continued: "No other party is involved in this decision, and they hope to remain friends moving forward."
Pope and Norcoss both underwent nose surgery last month, later denying that the cosmetic procedure was a publicity stunt.
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