Katy Perry and John Mayer are reportedly caught cuddling at the Grateful Dead concert. Fans of the couple who witnessed the PDA took to Twitter to share what they saw.

According to ET Online, Katy Perry and John Mayer were spotted getting cozy at a Fourth of July weekend concert in Chicago. The couple attended the second show of the Grateful Death's three-night "Fare Thee Well" concert.

The "Roar" singer also shared a photo on Instagram, with the caption, "grateful." Perry was reportedly seen wrapping her arms around her beau in public.

It was said that the on-and-off couple took some time to pose with a couple of fans. The concert was also attended by other famous celebrities like "Game of Thrones" author George R.R. Martin, Woody Harrelson, Chloe Sevigny and Jenny Lewis.

The "Your Body Is A Wonderland" singer was reportedly a huge Grateful Dead fan. He has attended over five shows during their "Fare Thee Well" tour.

Us Weekly previously reported that the couple had a full make out session during the Met Gala after party. Although, Mayer did not attend the gala, he reportedly followed in the after party to be with his lady love.

"The evidently on-again lovebirds stood very close to one another at the Boom Boom Room, leaning in for many passionate kisses and holding hands as they drank champagne and chatted with other famous attendees," the publication reported.

Earlier this year, the couple broke up again after their busy schedule took a toll on their relationship. Radar Online claimed that they got back together after the "Prismatic World" tour, however, soon parted ways because of some unresolved issues.

"The reason they have split in the past is because Katy gets busy. John can't handle the lack on attention, and she can't handle the trust issues she has when she's so far away," the insider revealed.