WENN 1 / 14

It's closing in on a year since Demi Moore ended her marriage to Ashton Kutcher, announcing, "As a woman, a mother and a wife, there are certain values and vows that I hold sacred, and it is in this spirit that I have chosen to move forward with my life."

But it seems like the actress might be having trouble letting go.

In a new cover story, People magazine delves into Moore's "broken heart" and "struggle to heal," which has apparently been made more difficult by Kutcher's PDA-packed romance with his former "That '70s Show" co-star and longtime friend, Mila Kunis, 29.

A source tells the mag that Demi, who turns 50 on Nov. 11, is "jealous and frustrated" with the six-month-old relationship.

She's also said to be hung up on how their marriage fizzled out, with Ashton, 34, marking what would have been their sixth anniversary in September 2011 by reportedly hot-tubbing with a nubile blonde.

"What was humiliating was having her husband cheat on her in such a public way," sighs another spy. "But once that happened, she has not looked back."

But it doesn't sound as if she's looked forward, either.

Following her hospitalization in January and reported rehab stint, Demi has kept mostly out of the public eye, but insiders fear she still has a ways to go on the road to recovery.

"Her friends aren't convinced she's all better," a source tells People, which says her inner circle is concerned that her "happiness is threatened" by Ashton's "public new love affair."

Also causing worry: Moore's still slimline figure.

This latest examination into Demi's state of mind follows a similar piece in Us Weekly, which claims she's "not psyched" by Ashton and Mila's hookup.

"She was always insecure over the course of her marriage," explained a confidant. "So, yeah, it's hurtful that he's with someone he knew the whole time he was with her."

Moore and Kutcher have yet to finalize their divorce (word is, they're still haggling over financial terms).


Mila attends Kabbalah services with Ashton

Ashton and Mila's romantic Bali vacation

Ashton has 'always had a thing' for Mila