'Funniest lady in the game. Greatest mum out there': Bobby Cannavale sends sweet message to partner and the mother of his two children Rose Byrne on her 39th birthday

They have enjoyed a loving relationship for six years and share two gorgeous sons together.   

And on Tuesday, Rose Byrne's partner Bobby Cannavale sent the Australian actress a sweet tribute on her 39th birthday.

The Hollywood hunk took to his Instagram account to share a loved-up snap of the pair accompanied with a heartfelt message.

'Funniest lady in the game. Greatest mum out there': Bobby Cannavale sends sweet message to partner and the mother of his two children Rose Byrne on her 39th birthday 

'Funniest lady in the game. Greatest mum out there': Bobby Cannavale sends sweet message to partner and the mother of his two children Rose Byrne on her 39th birthday 

'Happy Birthday to the lady of my life,' the American actor wrote. 'Funniest lady in the game. Greatest Mum out there. Lucky boys we are.'   

The 48-year-old and his leading lady seem to be more in love than ever after they began dating in 2012, when they met on set of their film Annie.

The couple have since gone on to have two sons together, Rocco, two, and Rafa, who's almost one.

The birthday note comes after Rose was seen strutting her stuff on the red carpet for the premiere of The Wife on Monday, where her Damages co-star Glenn Close pretended to faint and fell in front of her.

Common law husband': Rose and Bobby have been together since 2012, but have yet to tie the knot; seen in 2017

Couple goals! The 48-year-old actor and his leading lady seem to be more in love than ever after they began dating in 2012, when they met on set of their film Annie

Falling for you! The birthday note comes after Rose was seen strutting her stuff on the red carpet for the premiere of The Wife on Monday, where her Damages co-star Glenn Close pretended to faint and fell in front of her

Falling for you! The birthday note comes after Rose was seen strutting her stuff on the red carpet for the premiere of The Wife on Monday, where her Damages co-star Glenn Close pretended to faint and fell in front of her

Rose seemed shocked at first after the 71-year-old threw herself to the ground, but the Australian beauty seemingly laughed it off and continued her way down the carpet.

After the humourous prank, Rose then helped her co-star back to her feet.

The stunner stole the spotlight wearing blue skinny leg jeans and matching navy blazer.

She finished off her look with a red lip and black stilettos, finishing off her classic look.  

Too funny! After the humourous prank, Rose then helped her co-star back to her feet

Too funny! After the humourous prank, Rose then helped her co-star back to her feet

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