Mila Kunis has a message for young Miley Cyrus: "Keep your hands off my man!"

An insider reports that the "Black Swan" actress is seething with jealousy over the news that the Disney star turned party girl will be cozying up to her boyfriend Ashton Kutcher, when she guest stars on his show "Two and a Half Men."

"She's concerned that with Ashton's checkered cheating history, he could easily fall prey to Miley's charms," says the source.

So, Mila is taking precautions by setting some ground rules for her philandering beau, "That includes no extracurricular partying or socializing with Miley, no flirty texts or emails back and forth - nothing," noted the insider.

But Mila shouldn't be too concerned. The newly blonde pop star is engaged to actor Liam Hemsworth, and has said about their relationship, "Neither of us is superjealous...we would never do anything to hurt each other."

VIA: STAR