Demi Moore dated Ashton Kutcher’s Two and a Half Men co-star Jon Cryer... when Ashton was seven

BEFORE they shared the screen, Jon Cryer and Ashton Kutcher shared a love interest. Cryer has spilt all, including his angst about coming clean to Kutcher.

(FILES): This May 4, 2010 file photo shows actors Ashton Kutcher and Demi Moore attending Time's 100 Most Influential People at Frederick P. Rose Hall, Jazz at Lincoln Center in New York. Demi Moore announced "with sadness" on Thursday, November 17, 2011 the end of her high-profile marriage to Ashton Kutcher, after his reported infidelity with a woman less than half her age. The confirmation comes after months of media reports about problems between the couple, who married in 2005 when she was 42 and he was 27. She had earlier been married to actor Bruce Willis for 13 years. AFP PHOTO / Files / TIMOTHY A. CLARY

TALK about Hollywood being a small world.

Demi Moore dated Ashton Kutcher’s Two and a Half Men co-star Jon Cryer decades before she married Kutcher.

Cryer, 49, revealed that he and Moore, 52, were together about 30 years ago when they appeared in the 80s movie No Small Affair, writing about the romance in his new memoir, So That Happened.

Baby-faced ... Stars in the making, Demi Moore and Jon Cryer in the 1984 film.

All grown up ... Jon Cryer. Picture: Alberto E. Rodriguez/Getty Images

Cryer said he felt awkward about telling Kutcher, 37, about it when they first met in “chemistry meetings” to discuss him taking over from Charlie Sheen on Two and a Half Men in 2010.

“How do I tell Ashton she and I dated when he was seven?” Cyrer told US TV show Live! With Kelly and Michael, according to the Daily Mail.

Kutcher and Moore were married at the time Kutcher joined the cast of Two and a Half Men.

More than friends ... Ashton Kutcher and his now ex-wife, Demi Moore, pictured in 2011. Picture: AP Photo/Evan Agostini

Turns out, Moore beat him to it.

“At the end he (Ashton) said, ‘she told me’. He was cool about it,” Cryer said.

The ex factor ... Jon Cryer and Ashton Kutcher on the set of Two and a Half Men. Picture: Supplied

Moore and Kutcher tied the knot in 2005 when she was 42 and he was 27. They split up in 2011 after being together for six years.

Originally published as Demi Moore dated Ashton Kutcher’s Two and a Half Men co-star Jon Cryer... when Ashton was seven