Lady Gaga sparks reunion rumours after she posts a photo of ex-fiance Taylor Kinney with her mother

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Lady Gaga and Taylor Kinney called off their engagement back in July but it seems he is very much still in her life.

Gaga shared this adorable picture of her ex-fiance and her mother Cynthia Germanotta supporting her charity together.

The duo were at Rockefeller Centre in New York backing the Born This Way Foundation by posting letters to soldiers fighting abroad.

She captioned it: "At 30 Rockefeller center my charity the @btwfoundation also offers a place to send kind letters to people. @taylorkinney111 and my mom sent letters filled with kind words to soldiers fighting overseas."

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The picture sparked plenty of speculation in the comments that the pair may be reuniting.

Lady Gaga and Taylor began dating in 2011 after they met on the set of her You And I music video, and even after the split she continued to heap praise on the Chicago Fire actor.

Back in October Gaga told radio host Howard Stern: "We love each other, that's it... To be fair, I think that Taylor's pretty f***ing cool that over the years no matter what creative transformation that I've gone through, he's always been very supportive of that and loving."