Romance rumors have popped up after the two, who both starred in the indie comedy “Bachelorette,” were recently spotted out and about together.
The actress told People.com, "He's just one of my best friends... he's one of my dearest friends."
The Emmy nominee added that even if they were dating, she “wouldn’t tell.”
Marsden and his wife of 11 years split in 2011.
“Masters of Sex” star Lizzy Caplan wants everyone to know that actor James Marsden is just her really good friend.