EXCLUSIVE

Nicki got everyone all heated by posting a photo of her foot in a pink and clear shoe with the caption: "SINGLE N READY TO MINGLE."

But TMZ has learned Minaj and Samuels just had a small dispute (like all couples) ... and the pic was definitely intended to piss him off -- but we're told everything between them is fine now.
Besides, Samuels has Nicki tatted all over his body ... where's he gonna go?
