Ant Anstead shared a rare photo with his girlfriend Renée Zellweger to Instagram on Saturday, while marking the one year anniversary of their relationship.

The presenter, 43, grinned from ear-to-ear while placing a tender hand around the 52-year-old actress' waist on the set of his car series, Celebrity IOU: Joyride.

She looked trendy in a pink floral blouse and khaki trousers while wrapping up in a blue zip-up hoodie, as he kept things casual in a black T-shirt and jeans.

In his caption, the Plymouth-born US TV personality wrote: 'WOW! This just popped up in memories.

'One year ago today! Sat on the back of a fire engine on the final day of filming having handed two amazing men a car as a thank you from Ren.

'Amazing what can happen in just one year…….'

It comes after Property Brothers star Jonathan Scott and his twin brother Drew claimed they are 'directly responsible' for bringing the couple together.

The Vancouver native, 43, and his sibling chatted on Wednesday with Extra to promote the upcoming season of their series Celebrity IOU, which was a conduit to the romance between the TV presenter 43, and the Oscar-winning actress, 52.

Jonathan said: 'Celebrity IOU: Joyride was actually not just about a car show giving back to people. That was actually an undercover dating show to find Ant the love of his life.'

The brothers noted that Renee was interested in appearing on Celebrity IOU: Joyride - which Anstead hosted and the brothers produced - after seeing Brad Pitt on an edition.

Drew chimed in: 'We have what we call our showmances. So over the years, with all the shows that we've hosted or produced, we have a whole bunch of people.

'And this isn't just one-night stands, this is people who have fallen in love, gotten married, they have kids.

'We have some of our designers with our directors or ADs with our construction team, so it's really cool for us to see how many people find love and emotional connection in all of these shows that we do that are all about love and emotional connection.'

Speaking with PEOPLE (The TV Show) Wednesday, Jonathan said he and his sibling take credit for the match.

On her edition of Celebrity IOU: Joyride, Renee gifted twin brother nurses Jerome and Jerald Cowan with a vehicle for their care for her late friend and rep Nanci Ryder, who died in 2020 after a battle with ALS.

She and Ant were seen together publicly in August of 2021 and revealed they were dating in an Instagram post in September.

Asked if the pair could be headed to the altar, Drew said, 'Who knows?' adding, 'I better be the ring bearer, that's all I care about.'

Ant, speaking with People last fall said that he preferred to keep things under wraps in his romance with the Judy star.

'Renée and my relationship is something that's really private,' he said. 'It's something I'm not really willing to talk too much about. It's really early in our relationship and I don't want to put any pressure on that.'

The Judy star, speaking with Harper's Bazaar, said there was a serendipitous aspect to meeting Anstead indirectly through her late confidante Ryder.

'She's always doing her best,' the Jerry Maguire star said. 'It made me smile. It made me smile to think on this, yeah, the serendipity of it all.'