The '12 Years a Slave' actor is reportedly in a relationship with Romanian model and actress Madalina Ghenea, having moved on from Olympian Louise Hazel, who he was rumoured to have been dating since May last year.
According to The Sun newspaper, the 36-year-old star went on a trip to New Zealand with the beauty in November and spent the New Year with her in Romania.
He was keen to keep their love a secret after deciding to take older sister Catherine to the Golden Globes in Hollywood on Sunday, instead of his new love, where he missed out on an award for Supporting Actor (Drama, Musical or Comedy) to 'Dallas Buyers Club' star Jared Leto.
ormer Peroni model Madalina, 25, dated Michael's '300' co-star Gerard for nine months from September 2012 and has also been linked to Leonardo DiCaprio.
The stunning brunette was named one of the most desirable women of 2012 by website AskMen.com and as well as modelling she has co-starred in 'Dom Hemingway' alongside Jude Law.
She is believed to have posted a photograph on her Instagram account which shows a glimpse of her new boyfriend.
Michael also dated his 'Shame' co-star Nicole Beharie, 28, who confirmed their split on Twitter in January 2011, before he was linked to British heptathlete Louise, who he regularly dined with in London.