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Sometimes, there's no telling where Cupid's arrows will land. Case in point: Sarah Silverman is seeing "Masters of Sex" actor Michael Sheen, and they recently enjoyed a very public display of affection, reports Us Weekly.

On Feb. 6, the comely funny lady, 43, got "hot and heavy" with the British thespian, 45, at a Los Angeles hotspot.

"They were making out at Soho House," relays a spy. "They were all over each other for a lot of the night."

The evening before, they reportedly celebrated Sheen's birthday with a party featuring a variety of famous faces, including his "Sex" leading lady Lizzy Caplan, Kate Hudson, Nicole Richie and Demi Moore.

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

Also on the guest list: Sheen's ex-girlfriend, Kate Beckinsale, who was there with her husband, director Len Wiseman. The amicable former flames dated from 1995 to 2003 and have a 14-year-old daughter, Lily.

The actor split with his "Midnight in Paris" co-star Rachel McAdams in February 2013 after more than two years of togetherness.

Silverman, whose long-term romance with fellow comedian Jimmy Kimmel ended in 2008, most recently dated funnyman Kyle Dunnigan.

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