While Ashton Kutcher has moved on from his six-year marriage to Demi Moore at warp speed, it seems the 49-year-old actress is still grieving the end of their relationship.

According to People magazine, Moore is shocked and humiliated by her ex's very public romance with his former "That 70's Show" co-star, Mila Kunis.

A source close to Moore tells the magazine that she is "jealous and frustrated" by Kutcher's relationship with Kunis -- who was just named Esquire's "Sexiest Woman Alive"-- and her friends are worried about her state of mind.

"Her friends aren't convinced she's all better," concludes a source, who says that Moore's physical and mental health issues have become a concern for those closest to her in the wake of her divorce, which caused her to go into a deep depression.

Moore, who was hospitalized in January after being found unconscious and then entered a rehab facility for exhaustion, has acknowledged that the split from Kutcher, 34, has been difficult for her.