Lea Michele - Lea Michele And Monteith Dating?

The actors have portrayed an on/off couple on the hit TV musical since its launch in 2009 and it seems their onscreen chemistry has since spilled over into their personal lives.

Editors at Life & Style magazine claim Monteith treated the 25-year-old beauty to a cosy dinner date at Il Covo restaurant on the most romantic day of the year - and they were not shy with their affections.

An eyewitness tells the publication, "They were into each other all night. She was very happy, flirting and touching Cory a lot. He just stared at her with puppy-dog eyes."

They were also allegedly spotted together at the Ritz-Carlton hotel in L.A. days later.

Michele has made no secret that she's a fan of Monteith, admitting last year (11), "As long as I get to have scenes with Cory, it makes me really happy."

The singer/actress split from her longtime boyfriend Theo Stockman in September (11).