Michelle Williams and Jason Segel were spotted getting cosy at the premiere of his movie 'The Five-Year Engagement' on Wednesday night (18.04.12).

The 31-year-old actress was seen leaning in and kissing the 32-year-old star on The Cheek at the afterparty and she then said something into his ear before rubbing his back and leaving through a curtain.

At one point during the afterparty, which took place in the Museum of Modern Art in New York, Jason was spotted holding Michelle's hand and whispering in her ear.

Jason - who co-wrote the movie about an engaged couple who keep delaying their nuptials - revealed he wants it to be a quick process when he gets engaged.

Speaking generally, not specifically about Michelle, he told People.com: ''My plan is to get her to marry me as quickly as possible before she finds out who I really am.

''I'll do it romantic, but I'll do it like over a three-day weekend. We'll meet on Friday, have our first date on Saturday, engaged on Sunday and married on Monday.''