Grammy winner Melanie Fiona has penned several songs of heartbreak for her new album, “The MF Life,” and fans are speculating that the lost love-themed tracks are about her ex-boyfriend, “CSI:Miami” heart-throb Adam Rodriguez.

Sources tell us Rodriguez and Fiona, who’s managed by Jay-Z’s label Roc Nation, quietly but seriously dated for three years and lived together in Los Angeles. But the couple recently split, and Fiona — who won two Grammys this year for her song with Cee Lo Green, “Fool for You” — moved to New York from LA shortly after.

“They kept their relationship under wraps. They’d avoided attending events together or even being photographed when possible,” said a source.

But Fiona’s new album, which comes out March 20, describes a woman enduring heartbreak.

In a number titled “4 AM,” Fiona sings: “I think I’m ab-out, ’bout to hurt somebody/ I swear this man is begging me/to leave him. Getting sick of being so mistreated.”

Another cut, “Wrong Side of a Love Song,” includes the lyrics, “Where were you when I needed a friend/thought I could be strong/never knew I’d be so wrong/a heartbreaker most of my life/ suddenly all changed the moment he left me and walked out my life,”

And in “This Time,” Fiona sings, “If only I showed you just how good you made me feel/ Maybe I wouldn’t be alone and you would be right here.”

But a rep for Rodriguez, who just filmed the Steven Soderbergh comedy “Magic Mike,” says he didn’t cause the anguish detailed in the songs and adds, “Adam knows about all of those songs, but they were written months ago — they were very happy together.”

His rep confirms they broke up in the past month, but the split was “very nice” and they’re still friends. “Adam still cares about her,” the rep told us.