AceShowbiz -

Janet Jackson just added fuel to rumor she is rekindling her romance with ex Jermaine Dupri. The 51-year-old singer was recently spotted stepping out together with her music producer ex at a private party at STK Atlanta, where she celebrated the end of the U.S. leg of her "State of the World" tour.

According to an eyewitness, Janet and Jermaine arrived together at the private bash "right after the show. He was dressed in a long hooded cloak. It seemed like he was trying to fly under the radar." The divorced singer and the 45-year-old music producer reportedly spent the evening together seated in the VIP area.

Janet looked in high spirits at the bash, according to another eyewitness, who added to Page Six that the "That's the Way Love Goes" songstress was "thrilled the restaurant made vegan options for her. She was super friendly, saying hi to everyone" at the party that was also attended by Big Boi from Outkast and his wife.

Reps for Janet and Jermaine have not responded to the reconciliation rumor, which first sparked in late September following the songstress' split from her husband of five years, Wissam Al Mana, with whom she shares a son named Eissa. It was reported that months after her separation from the Qatari businessman, the "Nasty" singer had been getting support from Jermaine.

Multiple sources claimed that things had been heating up again between Janet and Jermaine, who "have recently reunited and not just for music making purpose." While it's unclear how long they had been in contact with each other, the singer allegedly had been leaning on the hip-hop star amid allegations her estranged husband Wissam was emotionally and verbally abusive.

But, according to a source, the two were just friends and nothing more. "Jermaine and Janet have remained friends through all these years and never lost touch," claimed the insider at the time.