Matthew McConaughey won't explain why he isn't wed

Matthew McConaughey says it's "nobody's business" why he and Camila Alves haven't married.

The 'Lincoln Lawyer' actor has two children with the Brazilian model - Levi, two, and 14-month-old Vida - and while the couple are very happy together they have decided not to marry, for reasons Matthew wants to remain a secret.

He said: "Would I like the perception of me to be a true mirror of who I am? Sure. Absolutely. Are there still things that I've got that are mine? That are nobody's business? Speculate all you want. Why didn't Camila and I get married? Nobody's business." However, while they are not man and wife, Matthew, 41, wanted 29-year-old Camila to feel secure in their relationship as soon as they realised it was serious so he made sure they bought a new home together.

He told America's Esquire magazine: "Before this, I had a super home in the Hollywood Hills that I did by myself - landscaping, detailing pretty much everything. But that house was mine. And yeah, we coulda gone in there right away. Camila would have said, 'Fine, don't change a thing.' But I thought, I found the woman I wanna do it with, the woman I wanna make a family with, hopefully live our life out together.

"She needs to have 50 per cent of that. I mean, it's a lot easier for me to be at 100 percent. I'd always been 100 per cent. It's braver for me at 50 per cent."