October 10, 2012 12:57 IST
Olivia and Jason – who she says are "blissfully, hopefully, wildly in love" – reportedly moved in together recently but are in no rush to wed.
Olivia Wilde and Jason Sudeikis "have sex like Kenyan marathon runners".
The Butter actress - who has been dating Jason for 10 months - revealed her sex life suffered in her marriage to Tao Ruspoli, which ended in 2011, but she couldn't be happier with the 'Saturday Night Live' funnyman.
According to Vulture magazine, she said: "I felt like my vagina died. Turned off. Lights out . . . you can lie to your relatives at Christmas dinner and tell them everything on the home front is just peachy. But you cannot lie to your vagina.
"Sometimes your vagina dies. Then you know it's time to go. There's no reason to sacrifice your womanhood and femininity for some sort of weird feeling of responsibility to something that may not be right. I feel like far too many women do that."
Olivia and Jason - who she says are "blissfully, hopefully, wildly in love" - reportedly moved in together recently but are in no rush to wed, as they have both been married before. A source said: "They are living together now," and are "totally inseparable."
Jason was previously married to actress and 30 Rock writer Kay Cannon from 2004 to 2010.
The source added: "They've both been married, so they've already experienced that and know what it entails. It's something for down the road."