JOSHUA & KATIE SHE'S THE ONE THAT GOT AWAY'

Sparks are flying for the old flames, who are spending increasing amounts of time together

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They were the couple of the '90s, costars-turned-lovers whose real-life love story was the thing of teenage dreams.

And Dawson's Creek fans everywhere were bursting with excitement to see Joshua Jackson and Katie Holmes back together in New York last week, as it's revealed the actor has always felt that Katie was the one that got away.

“The sparks have never stopped flying between Josh and Katie. They literally are each other's childhood sweetheart, so it’s lovely to see them come together like this after so many years of highs and lows, certainly when it comes to romance,” an insider tells Woman's Day.

The pair - who met playing teens Pacey Witter and Joey Potter in the coming-of-age drama in 1998 - famously dated on the downlow during the first two seasons of the hit show. Each cited the other as Their first love and, while their romance didn't last, they remained close.

Now, 22 years after the series wrapped, Katie, 46, and Joshua, 47, have come together again for her film Happy Hours, where they'll play a couple onscreen for the second time.

"Working with Josh after so many years is a testament to friendship," Katie says of the film, which she will write, star in and direct. "[It's] a love story that includes so many people I adore."

Insiders suggest Joshua is hoping the creative reunion will also bring him and Katie back together romantically...