Simon Cowell is dating a Mezhgan Hussainy lookalike.

The 53-year-old music mogul was spotted enjoying a dinner date with 'True Blood' actress Janina Gavankar - who plays vampire Luna Garza in the HBO series and looks very similar to his ex-fiancee - at Los Angeles restaurant Cecconi's on Saturday night (08.12.12), and the pair have been flirting on Twitter.

Last month, he wrote on the social networking site: ''Hello trouble. Simon x.''

The 32-year-old beauty replied: ''Who me?? #Definitely me. (sic)''

The 'X Factor' USA judge then responded: ''yes you. x (sic)''

Simon - who split from make-up artist Mezhgan in February - and Janina have since deleted the tweets from their accounts.

Janina - who dated US internet entrepreneur Angelo Sotira, 31, for five years before they split in 2010 - was spotted smiling in the back of Simon's chauffeur-driven car on Saturday.

But the 'True Blood' star is not the only brunette beauty Simon has been romantically linked to in the past. Since splitting with Mezhgan, Simon has been linked to 38-year-old Brazilian Ana Paula Junqueira, and he has previously dated 'So Macho' hitmaker Sinitta and British TV presenter Terri Seymour.