Michelle Williams and Jason Segel are rumoured to be an item.
The My Week With Marilyn actress and the How I Met Your Mother star have been spotted out together on several occasions in New York and Los Angeles, according to People.com.
In the last few weeks the pair were apparently seen out together in Brooklyn, where Michelle lives with her six-year-old daughter from her relationship with the late Heath Ledger.
Michelle, 31, and Jason, 32, are also reported to have dined together at Comme Ca in Los Angeles.
The couple are rumoured to have been introduced by Michelle's close friend Busy Philipps, who starred with Jason in Freaks And Geeks.
He recently told Parade magazine: "I don't want to have a girlfriend for the sake of having a girlfriend. I have no desire to pick a random girl.
"I want the right girl. There are plenty of opportunities, but I would rather have the right one."
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