The actor has been single since ending his three-year relationship with Lively last September (10), but he’s sparked rumours of a budding new romance with rising star McNamee after enjoying a cosy night out in Los Angeles last week (12May11).
An eyewitness tells America’s Star magazine, “They were having this deep talk for hours. Penn had his arm around the back of her all night. It was clear they were really into each other.”
McNamee is set to hit movie theatres in upcoming romantic comedy The Vow, starring as Rachel McAdams’ onscreen sister.
Meanwhile, Lively’s love life has also hit headlines of late after being linked to newly-single Leonardo DiCaprio.