'I'm lucky': Channing Tatum calls wife Jenna Dewan his 'pot of gold' in sweet Instagram post for her 36th birthday

They are one of the happiest couples in Hollywood.

So it was no surprise that Channing Tatum posted a gushing message on Instagram to mark his wife Jenna Dewan's 36th birthday on Saturday.

The Magic Mike star, also 36, made hearts melt when he shared a snapshot which showed him cuddling up to his other half in front of a rainbow.

'Happy birthday cake baby!': Channing Tatum shared a gushing Instagram post on Saturday to mark wife Jenna Dewan's 36th birthday

'Happy birthday cake baby!': Channing Tatum shared a gushing Instagram post on Saturday to mark wife Jenna Dewan's 36th birthday

In the accompanying caption, Channing wrote: '@jennaldewan I'm not sure if this woman is my Rainbow or my pot of gold but I'm lucky either way happy birthday cake baby!' 

Meanwhile Jenna posted a selfie which showed her blowing a kiss, writing: 'Kisses for all of you!! THANK YOU for my happy birthday wishes!!!!

'I can't possibly thank you all individually, but please know I love you all and words can't explain how grateful I am for your love and support always.'

'I love you all': The birthday girl also took to social media to thank fans for their well wishes

'I love you all': The birthday girl also took to social media to thank fans for their well wishes

So in love: Channing and Jenna, pictured last month, are one of the happiest couples in Hollywood

So in love: Channing and Jenna, pictured last month, are one of the happiest couples in Hollywood

Channing and Jenna married in 2012, having met six years earlier when they co-starred in the hit dance movie, Step Up. 

And Jenna admitted earlier this year that they are definitely going to make their now-three-year-old daughter Everly watch the film.

She told Women's Wear Daily: 'We keep saying we are going to force feed to Everly. Like, "You have to watch. You have to see where you came from."' 

Cute family: The dancers turned actors married in 2012 and are parents to three-year-old daughter Everly, seen here with her father last month

Cute family: The dancers turned actors married in 2012 and are parents to three-year-old daughter Everly, seen here with her father last month

The couple are certainly busy. Jenna is currently starring on Supergirl, and Channing has several movie projects in the works.

They include Kingsman: The Golden Circle and MIB 23, a Jump Street-Men In Black crossover movie co-starring Jonah Hill.

Channing also co-stars with Daniel Craig, Seth MacFarlane, Riley Keough and Katherine Heigl in director Steven Soderbergh's heist movie Logan Lucky, and will be portraying X-Men's Gambit in a much-anticipated spin-off film.

Falling in love: The pair got together after meeting on set of their 2006 dance movie Step Up

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