By Glenn Garner For Dailymail.com
Published: 16:51 BST, 5 April 2020 | Updated: 16:52 BST, 5 April 2020
Gwyneth Paltrow shared a few romantic moments with Robert Downey Jr across 22 Marvel movies.
But in real life, the Goop mogul considers her charming co-star a 'brother, friend and supporter.'
She paid tribute to him Saturday in a sweet Instagram post as she wished Downey Jr a happy 55th birthday.
Happy birthday: Gwyneth Paltrow paid tribute to Robert Downey Jr Saturday in a sweet Instagram post as she wished Downey Jr a happy 55th birthday
The 47-year-old posted a photo of herself reacting in shock to his speech at her 2018 wedding to Brad Falchuk, 49.
She wrote: 'Before we put this April 4th to bed, I must wish my dear, dear @robertdowneyjr a happy birthday. Here he is, making a toast at our wedding, during which his humor elicited my usual look of pure joy/shock whenever he is near.
'He is my brother, friend and supporter. A mega genius, and the weirdest comedy writer of all time. I know all of our @marvel family