Nicki Minaj Gets NOT Happy Birthday Wishes from Her Ex, Safaree Samuels

Nicki Minaj might have a fabulous birthday today, but it won't be because her ex-fiancee Safaree Samuels wished her one.

We got Safaree in NYC, where he was happy to talk about his new mixtape, his family ... probably even the weather. But when our photog Adam brought up Nicki's 33rd bday -- Safaree's tone changed.

Safaree did have a birthday greeting for someone other than Nicki.

It's been more than a year since their breakup, but Safaree's clearly not letting go ... of his bitterness.