Gerard Butler recently got very touchy-feely with his The Bounty Hunter costar Jen Aniston — and there’s photographic proof.

In a buzzed-about rearview photo from March 27, Butler tightly grabbed Aniston’s bottom while greeting fans on the River Seine in Paris.

During a Friday appearance on syndicated radio show “Johnjay and Rich,” Butler, 40, joked about the bootylicious snapshot.