Lea Michele slips into blue bikini during her Valentine's Day in Cabo San Lucas

Lea Michele continued her dazzling bikini display in Mexico yesterday, swapping her pink two-piece for a sexy purple one.

The Glee star was spotted topping up her tan in Cabo San Lucas - as reports emerged today she is now dating her co-star Corey Monteith.

The pair have denied talk of an off-screen romance in the past.

However, Life&Style reports the 25-year-old songstress has now taken things to the next level with Cory and the pair even spent Valentine's Day together.

New romance?: Lea Michele is rumoured to be dating Glee co-star Cory Monteith

According to the magazine, fellow diners saw the couple parading their affection for each other and they are understood to have been giggling and holding hands throughout the evening.

Eyewitnesses also saw Cory feeding his new squeeze spaghetti and the brunette was seen tenderly rubbing her beau's back.

The observer told 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.'

Happy: The pair are understood to have enjoyed a Valentine's Day date together

 Fun in the sun: Lea is enjoying a sunshine getaway in Cabo San Lucas

Far from hiding their alleged blossoming romance, the pair are understood to have enjoyed another dinner date three days later.

A crew-member of the hit musical TV show told Life&Style: 'Cory is totally into her.'

While Lea split from boyfriend Theo Stockman, she and Cory have apparently had an undeniable chemistry since they began working together.

The actress said in 2011: 'For me, if it was going to happen with anybody, it would have happened with Cory.'

Beach babe: Lea showed off her fantastic figure in a purple bikini