N-Dubz's Fazer denies he and Dappy haven't spoken in "months"
However, Fazer told MTV that he had actually called up Dappy to pass on his "congratulations" over the release of his single 'Rockstar'.
Speaking of the call, Fazer said: "It was cool!"
Fazer had also previously told MTV about bandmate's Tulisa's debut single release - which he called a "really big dance record".
Watch Fazer and Dappy perform 'No Regrets' below:
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