Charlotte Gainsbourg is feeling "anxious" about marriage.
The Nymphomaniac star's actor-and-director partner Yvan Attal proposed last year and the couple have children Ben, Alice and Joe together.
Despite the question having been popped, the pair are now unsure if they're making the right decision by getting married.
"I obviously said yes. It was very funny the way he proposed (while he was being honoured at the Ministry of Culture, in front of a crowd of journalists), but I'm not sure we're actually going to do it," she admitted to the latest edition of British magazine Marie Claire.
"We've started feeling a little anxious about the whole thing since. We'll see. After he did that and I said yes, we figured we were quite happy the way we were."
The 42-year-old admits she and Yvan are often "exhausted" and that it can take a toll on their relationship.
She was open about her shortcomings and admits she needs her fiancé to keep the family dynamic stable.
"I'm very unstable; I can be easily swayed," she candidly revealed.
"I don't think I'm reassuring and that's not good for children. I can't help thinking that I've failed something, as a mother. I show them a very vacillating image. Yvan completes me very well in this respect - he is stronger than I am. At least my children have that protection."
With her busy schedule, it's difficult for Charlotte to spend quality time with her children.
However, she does take them to work with her when she can.