It seems that Calvin Harris and Kim Kardashian have recently become good friends.

On Sunday (July 24), rapper French Montana shared a candid shot of the attendees at Jennifer Lopez’s 47th birthday party in Vegas. Both Harris and Kardashian showed up to celebrate with the birthday girl; Kim even brought cake.

Harris hasn’t historically been spotted hanging out with the Kardashians, though. Could something have recently brought them together?

Could Calvin and Kim have had a deep bonding experience recently?

I guess their new friendship will just have to remain a mystery.