Johnny Depp and Amber Heard back on? The pair were spotted at the The Rolling Stones concert holding hands and looking cozy.

During the band's surprise concert at the Echoplex in Hollywood last night, Depp was seen protectively holding Heard's hand as he led her through the crowd, towards backstage for a private showing.

"The Rum Diary" co-stars sparked rumors of a romance after the film wrapped when Depp reportedly bought Amber her own horse.

Johnny, who wore an Andy Capp style hat, looked like he was having a great time with the actress, who was dressed in an eye-catching red jacket and white top.

He was trying to nostalgically wear a replica of the ensemble that his character wore in the film "Rum Diaries" where the two met in 2011.

This is not Depp's first attempt at wining her back with sentimentality. He had a bar built on his Bahamas property to look exactly like the one in "The Rum Diary." The set designer created the plans.

The on-again, off-again relationship just recently seemed to be definitely off. Heard was linked to a female photographer Tasya Van Ree, while Depp was rumored to be rekindling a romance with Winona Ryder, 20 years after the couple called it quit.

Johnny split from his partner, French model Vanessa Paradis, after 14 years together in June 2012. The pair share two children.

The actor has yet to confirm publicly if he and Amber are a couple.

Other stars that rocked out at the Stone's concert included Mary-Kate and Ashley Olsen, Gwen Stefani, Owen Wilson, and Bruce Willis.