Rihanna and Ashton Kutcher Dating?

Who could predict the next romantic affair for recently single Ashton Kutcher? It is rumored that the "Two and a Half Men" star is now dating singing sensation Rihanna, and has been for several weeks. The two met at the home of a mutual friend in Los Angles, and sparks immediately flew, a British paper reports.

"The flirting began as soon as Rihanna and Ashton met and swapped numbers," an anonymous source reportedly told the Sun. "That moved on to texts and arranging to meet. They snuck off to a Santa Monica hotel a few weeks ago."

The 24-year-old singer was seen leaving Ashton Kutcher's home in the wee hours of the morning last Thursday, TMZ reports. The two are becoming so close, that Rihanna has reportedly asked Kutcher to spend the summer with her. This summer Rihanna will be touring London. The pop star has already brought Ashton home to meet the family -- or at least to meet her younger brother Rorrey, who releases music under the name "GQ," it has been reported.

The Sun's source offered an explanation as to why Kutcher and Rihanna have kept their relationship under wraps.

'They are two single people having a fling, so thought it would be best to meet in secret," the source reportedly said, adding that Kutcher wanted to keep the relationship quiet to avoid hurting ex-wife Demi Moore.

"He's a good guy and, with all Demi's recent health problems, people have forgotten that," the Sun's source reportedly said.

Demi Moore, Kutcher's ex-wife recently got out of rehab for an eating disorder. The two split up in November after nearly six years of marriage.

According to yet another anonymous source, Moore is not happy for the new couple.

"Demi is constantly keeping tabs on Ashton so when [photos of Rihanna leaving Kutcher's house last Thursday] came up she was understandably devastated," the source reportedly said. "Demi's convinced something happened between them and said she felt 'sick to her stomach.'"

SEE VIDEO REPORT OF ASHTON KUTCHER AND RIHANNA'S MIDNIGHT GET TOGETHER