Even though Ashton and Demi still haven't filed for divorce, an insider tells RadarOnline.com that it's because the couple was never legally married and only had a symbolic Kabbalah ceremony, which may be why Ashton has moved on so easily with Mila.
"They're really serious," a source told Us Weekly of Ashton's relationship with Mila, noting that Demi is less than pleased.
"She's not psyched about Ashton and Mila."
According to the new report, Demi has always been insecure about Ashton's close friendship with Mila.
"She was always insecure over the course of her marriage," the source said.
"So yeah, it's hurtful that he's with someone he knew the whole time he was with her."
Ashton Kutcher & Demi Moore Dragging Out Divorce Over Money
Mystery Solved! Ashton And Demi Were Legally Wed, Did Not Just Have Kabbalah Ceremony