Ashton Kutcher is planning to propose to Mila Kunis over Christmas, it has been claimed.

The stars have been dating for the last few months, although they have been friends for much longer after starring in TV programme That 70s Show together.

Ashton split from his wife Demi Moore last year and apparently feels ready to settle down again, even though that union isn't officially over yet.

"Ashton and Mila are talking marriage. He's planning to propose at Christmas. They're moving fast but neither of them has ever been so happy," an insider told Heat magazine.

"Ashton wants kids and misses the security of being married."

At first, the couple were rarely seen in the public. Although neither of them has confirmed they are an item, they have been spotted kissing and cuddling in public.

Ashton, 34, has met his 29-year-old girlfriend's parents and both stars are convinced they have a long life together ahead of them.

"She's moved into his place in Hollywood. Mila says Ashton is the man she has been waiting for all her life and wants nothing more than to marry him," the source added.

"Ashton wants a new life with Mila. They know they've not been dating long, but as they've been friends for over a decade they feel like the timing is right."