(news.sawf.org ) - The handsome Irish actor has revealed he and the Oscar-winning actress recently tied the knot - although their union is not legally recognized.
Stuart told People magazine: "I'm married. I didn't do a church wedding or anything, but we're married - we're husband and wife!
"We love each other and we want to spend our lives together. We didn't have a ceremony. I don't need a certificate or the state or the church to say otherwise. So no, there's no big official story on a wedding, but we are married. I consider her my wife and she considers me her husband."
Stuart refused to reveal anymore details of the mystery 'wedding'.
The 'union' follows rumors the couple - who met on the set of the film Trapped - were on the brink of splitting.
Late last year, reports surfaced the pair had drifted apart, but Charlize was quick to rubbish the claims.
The Monster star recently revealed she wanted to become a mother, but isn't keen on conceiving naturally.
She said: "Getting pregnant doesn't excite me, but having kids does. I know I'll be a mother one day. It's just that I don't really want to look like a whale.
"But I'm sure the idea of something growing inside you is pretty powerful".