(Cover) - EN Showbiz - Demi Moore is reportedly "devastated" by her estranged husband's relationship with Mila Kunis.

Ashton Kutcher was pictured recently getting cosy with his former That 70s Show co-star although both have not yet confirmed a romance.

But RadarOnline claims that Demi was already finding it difficult getting over the breakdown of their six-year marriage and now this new relationship has made it worse.

"Demi is devastated that Ashton has moved on so quickly and is dating Mila," a friend told the site. "She is beyond heartbroken."

"Even though Ashton cheated on her all the time, it was with random girls, it wasn't a relationship like it is with Mila and that is what is killing Demi now.

"Seeing photos of him kissing another woman is too much for her to handle, it's like having her nose rubbed in it time and time again.

"Each time Demi hears about Ashton and Mila it breaks her heart. She really loved him despite the flaws in their marriage and to see him dating someone new, who is so much younger than she is, is like a knife in her heart."

Demi is also now said to be estranged from her three daughters who are practicing "tough love" in the hope she gets better. (C) Cover Media