Sadie Frost and Jude Law have been split up for nearly 17 years but that hasn't stopped her from reminiscing about their relationship.

The fashion designer, 54, took to Instagram on Friday morning to share an old photo of the two of them when they were a "young crazy couple in love".

In the snap, which appeared to have been taken in the late nineties or early noughties, Jude lay across a sofa with his feet sticking out, while Sadie sat on the back of the sofa in a red dress looking directly at the camera.

Sadie, who shares three children with Jude, 47, referred to him as "my children's dad" in the caption.

She wrote: "I love this image of me and my childrens dad... think he was the same age as @rafflaw is now in this...

"We were living in Chamberlain street with @zoegraceartist and @steve__mackey and little @mackeymarley had just been born.. Rafferty was on the way. and Finn was 6! Iris and Rudy were waiting in the wings...

"We were just a young crazy couple in love who didn't know what was going on!! And how to navigate the chaos that was round the corner."

Sadie then went on to reflect on what happened next, with the couple breaking up in 2003.

Jude Law and Sadie Frost in 2001

She said: "But 2 decades later and now our beautiful kids are all grown up & thankfully smarter than we were.

"It all makes sense."

Sadie, then 25, left her husband Spandau Ballet star Gary Kemp to be with Jude, who was just 19 at the time.

They went on to have three children; Rafferty, 23, Iris, 19, and Rudy, 17, while Sadie was already mum to Finlay, now 29, with Gary.

The pair split in 2003

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But Sadie and Jude began to drift apart as their careers began to take off.

Sadie suffered from post-natal depression and took to self harm and heavy partying.

The marriage came to an end in 2003 on a family holiday where she described herself as being "underweight, depressed and scared".