Scott Eastwood's loose lips let out a big secret on last night's Watch What Happens Live.

Host Andy Cohen was asking the evening's other guest, Jon Cryer, whether there was any awkwardness on the set of Two and a Half Men when Ashton Kutcher joined the show being that they'd both dated Demi Moore.

"Yeah, it was a little awkward," Cryer revealed.

Turns out, the young Eastwood had a Kutcher story of his very own.

"If it makes you feel any better, he did sleep with one of my ex-girlfriends–but she was my current girlfriend at the time."

"Wait, he slept with her while you two were together," Cohen asked.

Yurp.

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He wasn't done there, though.

"I think it was the catalyst that broke him and Demi up."

Scandal!

Check out the clip below.