Nicki Minaj -- Ex-BF Safaree Samuels Drops She Done Me Wrong Song -- (TMZ TV)

Safaree Samuels' new song might burn up the charts ... but it's definitely going to TORCH every bridge between himself and Nicki Minaj! The track is basically 5 minutes of Nicki's ex-bf bitching about her.

Then again, with subtle lyrics like ... "12 years up in flames, thought you woulda had my kid" -- she might not even realize the song is about her.