The couple, who went public with the romance last September (11), jetted to New York on Friday (30Dec11) to ring in the New Year at a posh party at the Bowery Hotel.

And The Notebook star Gosling was so smitten with his new love, he decided to get his mum Donna's seal of approval by inviting Mendes to meet them for a movie at an AMC theatre in uptown Manhattan.

A source tells, "They all hung out and went to the movies together. Ryan and Eva seemed very happy."