Lady Gaga has got back together with her ex-boyfriend.

The 'Edge of Glory' singer announced she had separated from Luc Carl in May but the pair have now decided to give their romance another try.

A source told Us Weekly magazine: "They had a little fight. I think the break-up lasted a week or two. But they are totally back together now."

Gaga - who got together with Luc again in July 2010 after they had a break from each other - announced she was single during an appearance on British TV series 'The Graham Norton Show'.

She said: "No, I don't have a boyfriend and haven't been on any dates recently."

The 25-year-old singer wrote the song 'You and I', which features on her global chart-topping album 'Born This Way', about 30-year-old Luc and admitted in the wake of the break-up performing the track makes her emotional.

She explained: "There is not one song on any of my records that wasn't written by me, and I think when you write your own music you find ways to reinvent [the songs] emotionally through yourself and performance so that they are different every night and that song you know, sometimes it's about the guy and sometimes it's about the fans."