Demi Moore 'sick' over rumours of RiRi's relationship with Ashton

London, Mar 28 (ANI): Demi Moore's friends have said that the actress is "sick to her stomach" over claims that Rihanna "hooked up" with her estranged husband Ashton Kutcher.

According to a source, the story of the pair's romance has "sent Demi spiralling", leaving her friends concerned for the wellbeing of the actress, who only left rehab last month.

"Demi is constantly keeping tabs on Ashton so when these pictures came up she was understandably devastated. Demi's convinced something happened between them and said she felt "sick to her stomach," the Daily Mail quoted the source as telling Grazia magazine.

Although the 34-year-old actor has been seeing other girls, none of them have been high profile, so the thought of him hooking up with someone as famous as Rihanna left her reeling.

"Demi's been acting crazy ever since, trying to find out information about the pair.

"Demi is in such a fragile state, even the idea of them together has affected her quite badly. She's in a terrible way but, at the end of the day, Ashton is a single man and free to do whatever he likes," the source said.

Another source said that the 49-year-old actress has been left "humiliated" because her ex appears to have moved on so quickly after her time in rehab following their marriage split.

"Demi can't believe Ashton would do this," another source said.

"She's really hurt by the rumours and feels humiliated he's being linked to other celebrities just a few weeks after she got out of rehab.

"She feels it cheapens their marriage even further," the source said.he claims surrounding the singer and actor's relationship come as the singer was seen keeping her head down while boarding a flight at LAX.

Rihanna has so far remained tight-lipped on reports that she and Ashton have in fact been seeing each other for eight weeks.

The pop star has reportedly been enjoying late-night trysts with the actor after hitting it off with him at a friend's party in December.

She is apparently so besotted with him that she's asked about joining his Kabbalah group.

The 24-year-old singer was spotted by a photographer as she drove up to the actor's property with her security team around midnight on evening last week. (ANI)