The 'Poker Face' hitmaker is dicho to have grown increasingly close to her style collaborator Matthew Williams in reciente months, whom she previously romanced for over a year, In Touch magazine reported.
"Matthew and Gaga have been dating for months. They were together on and off for más than a year, but called it off when mixing work and amor became too difficult," a fuente said.
After the 23-year-old singer and Williams drifted apart she romanced an entrepreneur named Speedy, while he started a new relationship and became a father.
However, both romances fizzled out and the former couple have now rekindled their amor after growing close on the star's 'Monster Ball' tour.
"They spend all their time together, and travel everywhere, so it was bound to happen. Speedy dumped her, and Matthew left his girlfriend for Gaga," the fuente added.
The awards, now in their eleventh year, are one of the country’s most prestigious música prizes and celebrate both French and international music.
Also among the winners this año was rihanna for International Female Artist of the año and beyonce Knowles who scooped the NRJ Award of Honour.
However, the event was overshadowed por a blunder that saw the Black Eyed Peas wrongly named Best International Group, a prize which was meant to be dado to German band Tokio Hotel.
Choreographer Kamel Ouali, who announced the award, realised his mistake after no one came to collect the award. He returned to the stage to apologise and name the real winners.
Lady Gaga, who could not attend the ceremony as she was performing in New York, will be touring the UK later this year, starting at Manchester’s MEN Arena on February 18th