|Michael Fassbender and Keira Knightley|
Speaking about Michael - who was carried out of the party on his friend's back - a source told The Sun newspaper: "Michael was politely asked to leave. He was in good spirits but it was becoming a bit of a handful for the other guests.
"He was grabbing his co-stars and waltzing around the room with them. He lita a cigarette indoors and that was the point it had gone too far.
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"He's a great actor and women loved him in 'Shame'. It might have something to do with him having his todger out for most of the movie."
Michael's co-star Keira has previously revealed the pair got through the more uncomfortable scenes in the film - which include Michael spanking her - by turning to alcohol.
Keira said: "We only had one or two shots maximum. It was a vodka shot to calm our nerves and away you go really. Then we had champagne. We drank quite a lot of champagne actually. You can count on Michael to buy a bottle of champagne when one is required. The vodka and champagne is a good combination."
Watch the trailer for 'A Dangerous Method' below: