Actress Mischa Barton watches the Miss Sixty 2009 fall/winter show during New York Fashion Week February 15, 2009. [Agencies]

Mischa Barton is "not a huge fan" of marriage.

The actress believes officially cementing a union can cause relationships to break down because people don't feel the need to work at them anymore.

She said: "I'm not a huge fan of marriage. It puts too much pressure on the relationship. People try harder until they're married and then you see a lot of relationships fall apart because it's the last step. There's nothing left."

However, Mischa - who recently split from British rocker, Kooks frontman Luke Pritchard - believes she will decide to settle down eventually.

The 23-year-old beauty added: "Whoever is going to be the father of my children I'll probably inevitably marry - but that's not on the cards any time soon."

Mischa recently revealed she is attracted to men who are confident enough to flirt with her and can make her laugh.

The former 'O.C.' actress said: "I have noticed that some men are scared of me because I have been on television. I have quite a few diehard fans.

"I find men with confidence and a great sense of humour very attractive. Those are the two factors that matter the most."