Kaley Cuoco jokes that husband Karl Cook ruined the moment after snapping sexy selfie

Kaley Cuoco is giving fans a peek at what really happens at home with her husband, Karl Cook.

The Big Bang Theory star took to Instagram on Wednesday, sharing an intimate photo of the two together. She revealed in the caption, however, that Cook accidentally ruined what should have been a steamy moment.

"I thought this picture was so sexy until @mrtankcook said we looked like siblings," Cuoco, who appears to be topless in the snap, joked. "Moment over. 💑."

Cuoco, 33, and Cook, 28, tied the knot last June and haven't been shy about packing on the PDA in public and on social media. And Cuoco told ET last November that she has learned to love Cook even more since tying the knot!

"It's the best ever," she said of married life. "I know some people say it shouldn't change, it should be the same, but you know for me it did. I'm just so happy to come home to him every day. He's my dream guy."

More photos of the couple:

14 PHOTOS
Kaley Cuoco and Karl Cook together
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Kaley Cuoco and Karl Cook together
SANTA MONICA, CA - JANUARY 11: (L-R) Actor Johnny Galecki, actor Kaley Cuoco, and Karl Cook attend The 23rd Annual Critics' Choice Awards at Barker Hangar on January 11, 2018 in Santa Monica, California. (Photo by Kevin Mazur/WireImage)
WESTWOOD, CA - DECEMBER 17: Actress Kaley Cuoco and Karl Cook arrive at the premiere of 20th Century Fox's 'Why Him?' at Regency Bruin Theater on December 17, 2016 in Westwood, California. (Photo by Gregg DeGuire/WireImage)
NEW YORK, NY - MAY 03: Actress Kaley Cuoco (L) and Karl Cook are seen in the East Village on May 3, 2017 in New York City. (Photo by Gotham/GC Images)
LONG BEACH, CA - SEPTEMBER 29: Equestrian Karl Cook and actress Kaley Cuoco arrive at Longines Masters Los Angeles Gala at Long Beach Convention Center on September 29, 2016 in Long Beach, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CA - MAY 02: Karl Cook and Kaley Cuoco is seen at LAX on May 02, 2017 in Los Angeles, California. (Photo by starzfly/Bauer-Griffin/GC Images)
LOS ANGELES, CA - JANUARY 23: Kaley Cuoco and Karl Cook are seen on January 23, 2017 in Los Angeles, California. (Photo by BG015/Bauer-Griffin/GC Images)
BEVERLY HILLS, CA - JANUARY 08: Actress Kaley Cuoco (R) and Karl Cook arrive at the 18th Annual Post-Golden Globes Party hosted by Warner Bros. Pictures and InStyle at The Beverly Hilton Hotel on January 8, 2017 in Beverly Hills, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
WESTWOOD, CA - DECEMBER 17: Karl Cook and Kaley Cuoco attend the premiere of 20th Century Fox's 'Why Him?' at Regency Bruin Theater on December 17, 2016 in Westwood, California. (Photo by Todd Williamson/Getty Images)
BEVERLY HILLS, CA - JANUARY 08: Actress Kaley Cuoco (R) and Karl Cook attend the 18th Annual Post-Golden Globes Party hosted by Warner Bros. Pictures and InStyle at The Beverly Hilton Hotel on January 8, 2017 in Beverly Hills, California. (Photo by Frazer Harrison/Getty Images)
SANTA MONICA, CA - DECEMBER 11: Actress Kaley Cuoco and Karl Cook arrive at The 22nd Annual Critics' Choice Awards at Barker Hangar on December 11, 2016 in Santa Monica, California. (Photo by Allen Berezovsky/Getty Images for Fashion Media)
SANTA MONICA, CA - DECEMBER 11: Actress Kaley Cuoco and Karl Cook arrive at The 22nd Annual Critics' Choice Awards at Barker Hangar on December 11, 2016 in Santa Monica, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CA - DECEMBER 07: Kaley Cuoco and Karl Cook are seen on December 07, 2016 in Los Angeles, California. (Photo by BG002/Bauer-Griffin/GC Images)
LONG BEACH, CA - SEPTEMBER 29: Kaley Cuoco, Karl Cook arrives at the Longines Masters Los Angeles - Gala at Long Beach Convention Center on September 29, 2016 in Long Beach, California. (Photo by Steve Granitz/WireImage)
INDIAN WELLS, CA - MARCH 12: Actress Kaley Cuoco and equestrian Karl Cook react during Bob and Mike Bryan of United States and Rafael Nadal and Fernando Verdasco of Spain doubles match during day six of the BNP Paribas Open at Indian Wells Tennis Garden on March 12, 2016 in Indian Wells, California. (Photo by Kevork S. Djansezian/GC Images)
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