Joe Jonas posts sweet Valentine's Day tribute to his wife Sophie Turner amid ...

It has been reported that they are expecting their first child together

And on Friday Joe Jonas, 30, posted a Valentine's Day tribute to his wife Sophie Turner, 23, with a photo of her happily swinging a bag while walking down a tree-lined path.

The singer captioned the care-free snap with a simple love heart emoji, and tagged the actress in the Instagram post.  

Wedded bliss: On Friday Joe Jonas, 30, posted a Valentine's Day tribute to his wife Sophie Turner, 23, with a photo of her happily swinging a bag while walking down a tree-lined path

Wedded bliss: On Friday Joe Jonas, 30, posted a Valentine's Day tribute to his wife Sophie Turner, 23, with a photo of her happily swinging a bag while walking down a tree-lined path

The sweet post comes after speculation emerged that they pair are due set become proud parents later this year.

The Game of Thrones star and her rockstar beau will welcome their first child into the world 'in the middle of summer,' according to US Weekly. 

Turner and Jonas are still in the throws of newlywed bliss nearly nine months after their surprise Las Vegas .

News broke on Wednesday that the happy couple are expecting their first child.   

Loved-up: The singer captioned the care-free snap with a simple love heart emoji, and tagged the actress in the Instagram post

Loved-up: The singer captioned the care-free snap with a simple love heart emoji, and tagged the actress in the Instagram post

Baby bliss! The Game of Thrones star and her rockstar beau will welcome their first child into the world 'in the middle of summer,' according to US Weekly; seen in January

Baby bliss! The Game of Thrones star and her rockstar beau will welcome their first child into the world 'in the middle of summer,' according to US Weekly; seen in January

'The couple is keeping things very hush hush but their friends and family are super excited for them,' a source tells Just Jared. 

Another insider added: 'Sophie has decidedly been choosing outfits to wear on and off the carpet to accommodate her changing body.'

DailyMail.com has contacted Sophie's spokesperson for comment. 

Happy: Sophie Turner and Joe Jonas are expecting a baby, according to a new report (Pictured in London on February 4)

Happy: Sophie Turner and Joe Jonas are expecting a baby, according to a new report (Pictured in London on February 4)

Joe and Sophie, who is best known for playing Sansa Stark on the HBO fantasy television series Game of Thrones, shocked fans when they held a surprise in Las Vegas less than two hours after attending the Billboard Music Awards in May.

Their DJ pal Diplo livestreamed the ceremony - without their permission - and showed the pair exchanging vows while an Elvis Presley impersonator officiated. 

Joe later admitted his own parents found out about his Vegas on the internet.  

Power couple: The pair, seen here at the Grammy Awards in January, married in a whirlwind ceremony in Las Vegas in May before exchanging vows for a second time in Europe in July

Power couple: The pair, seen here at the Grammy Awards in January, married in a whirlwind ceremony in Las Vegas in May before exchanging vows for a second time in Europe in July

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He said at the time: 'They did find out online. Well, in my mind, you know, that was the legal portion of the marriage. So I was thinking, like, 'Look, this is not the most important day' There's an important day, I mean, I'll keep private, but ahead of us. So we were, like, this is just whoever's in town.' 

Sophie said her father was thrilled at her choice of husband.  

She said: 'My dad was beyond pleased when I married a musician because it was always kind of, "You have to marry a rugby player or a musician." So I got one of them right ... He's getting into the Jonas Brothers. They weren't his demographic, but he's getting into them now and he loves them and the new music is fantastic.'

Pretty in pink: Sophie stunned at the SAG Awards on January 19

Pretty in pink: Sophie stunned at the SAG Awards on January 19

The pair married again in front of family and friends at an intimate ceremony at Le Chateau de Tourreau in July in Sarrians, France. 

Sophie's maid of honour was her co-star and best friend

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