"We have been together for about 10 years now, and we just love each other more and more every day. I like European and all different types. We are very happy together," the Mirror quoted her, as saying.
The actress, who is starring opposite Matthew Rhys in 'Edge of Love' with Keira Knightley, is also trying to crack up Rhys who said that Miller is 'very mischievous'.
"The girls are always trying to crack me up. Especially Miller - she's very mischievous," Rhys told Grazia magazine.