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Kaley Cuoco took to Instagram to wish her ex-beau and Big Bang Theory co-star Johnny Galecki a happy 43rd birthday on Monday.

‘Happy happy birthday to the best tv husband a girl could ask for!’ the 32-year-old captioned a throwback snap of them together back in the day.

‘This pic was taken during our first press tour in Rome,’ she captioned the cute photo of them enjoying dinner.

The star shared a snap of them high-fiving at ComicCon in San Diego last July.

Kaley and Johnny dated for two years when the show first started airing on CBS in September 2007.

Johnny has previously said: ‘Kaley’s not just an ex, she’s a part of my life.

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