Sandra Bullock and Bryan Randall are open to marriage

A source told Us Weekly: "It's more of an acknowledgment that they're lucky to have each other and that it doesn't take a piece of paper or formality to ensure happiness.

"She has been open to friends about how she’d love to make this official one day. It would be a cool thing to do and good for the kids."

Back in 2016, it was revealed Sandra is "more open" to the possibility of getting married again.

An insider said: "Sandra and Bryan are life partners.

"Their close friends have never seen Sandra this happy before. Sandra as of lately has been more open to the possibility of getting married again."

And Bryan is said to be keen to have more kids with Sandra.

The source shared a couple of years ago of the prospect: "He has taken on the role of raising the two kids with Sandra. He’s talking about wanting more children. Bryan is so in love. He went so far as to quit cigarettes cold turkey. That’s huge - he was a chain-smoker!"

Not long after they started dating, it was revealed that Sandra and Bryan had been discussing "spending the rest of their lives" with one another.

A source said at the time: "Sandra and Bryan have a very busy schedule, so the time they do have, they are with each other. They have discussed spending the rest of their life together, but taking day by day and just enjoying each other. Sandra couldn't ask for a better guy. They have a great dialogue when together and say 'I love you' very fluidly."

The couple have largely kept their romance out of the spotlight.