( CNN ) Not every woman can say they have made out with both Ashton Kutcher and his fiancee , Mila Kunis . Kunis revealed during an Ask Me Anything chat with fans on Reddit on Thursday that there is one actress with whom both she and Kutcher have locked lips . `` But here 's a little-known fact : there 's one person in the world that both Ashton and I have kissed , and that 's Natalie Portman , '' said Kunis , who was promoting her new film , `` Jupiter Ascending . '' Kunis had some steamy kissing with Portman in the critically acclaimed film 2010 `` Black Swan . '' Kutcher co-starred , and locked lips , with Portman in 2011 's `` No Strings Attached . '' So , Is Portman a good kisser ? Kunis says yes . `` She 's a lovely kisser , very polite , '' Kunis wrote . The actress and Kutcher , co-stars in TV 's `` That '70s Show , '' have been engaged since February 2014 . They welcomed daughter Wyatt in October .
She did a special celebrity interview ahead of her new movie , ` ` : Ascending '' She revealed that both she and I have kissed Natalie Portman . Portman was a ` ` lovely kisser , '' Kunis says .