Kaley Cuoco Called Boyfriend Karl Cook 'Perfect' at 'Why Him?' Premiere!

Just when we thought Kaley Cuoco and Karl Cook couldn’t get any more adorable.

The 31-year-old Big Bang Theory actress and her boyfriend were all smiles while hitting up a Pilates class together on Sunday (December 18) in Studio City, Calif.

PHOTOS: Check out the latest pics of Kaley Cuoco

The lovebirds also coupled up for the premiere of Kaley‘s upcoming comedy Why Him? over the weekend.

At the event, Kaley answered the question “why him?” with regards to Karl.

“He’s so cute!” Kaley told Entertainment Tonight. “[Why him?] Because he’s perfect!”

Don’t miss Why Him? when it hits theaters this Friday (December 23)!

Click inside to see a photo of Kaley snuggling up with another one of her loves…