Sarah Silverman dating Michael Sheen

Actress Sarah Silverman has reportedly embarked on a relationship with actor Michael Sheen, and the two were seen "making out" at a Hollywood nightspot.

Silverman was seen "making out" with the actor at Hollywood nightspot Soho House recently, reports femalefirst.co.uk.

"They were making out at Soho House. They were all over each other for a lot of the night," a source told Us Weekly magazine.

The duo also seemed to get close at Sheen's 45th birthday celebrations at Craig's last week.

"Sarah and Michael came and left together. She drove. When they left, Sarah opened her trunk so Michael could put all of his gifts in and then they drove away," said another source.

Sheen, who has a 14-year-old daughter Lily with Kate Beckinsale, briefly dated VH1 presenter Carrie Keagan last year and was in a relationship with his "Midnight in Paris" co-star Rachel McAdams for two years until February 2013.

Silverman was previously in a relationship with Jimmy Kimmel, but they split in 2009 after five years of togetherness.