The 52-year-old screen star, famous for her roles in movies such as "Coyote Ugly" and "Lights Out" and TV shows including "NCIS: Naval Criminal Investigative Service", beamed as she told Entertainment Tonight that the couple got engaged on 29 December in Paris, France.
"We're pretty happy, considering we just got engaged, so this is sort of our fun time out in Hollywood for the first time since we've been engaged," she smiled.
Suggesting that Dominique was the one to pop the question, Maria added: "It was very surprising, but meant to be. It's about time. I've finally grown up enough to get married. I think we just light each other up."
Maria shares a son Jackson, 18, with her former boyfriend Dan McDermott, and first came out in November 2013, when she wrote about having a same-sex relationship with then-girlfriend Clare Munn in her book "Whatever...Love Is Love: Questioning the Labels We Give Ourselves".