Mayer and Perry, who dated on and off between 2012 and 2015, both attended Carpenter's Short n' Sweet Tour in L.A.

Katy Perry paid tribute to Sabrina Carpenter following the pop singer's performance in Los Angeles at the Kia Forum earlier this week. "soooo @sabrinacarpenter show was too short but so sweet ," Perry wrote on Instagram alongside a series of photos from the show,