Mischa Barton's ex-boyfriend Brandon Davis is reportedly enjoying a whirlwind romance with Harrods heiress CAMILLA AL FAYED - and they are already discussing marriage.

The oil heir, who dated Barton for 18 months until their June 2005 split, dashed to London from Los Angeles to be by Fayed's side at her 21st birthday party last week (ends17FEB06).

And Davis is so loved-up with Mohammed Al Fayed's daughter, he is already considering ditching Hollywood life to move closer to his new love.

An insider says, "They are an item but they're trying to keep things low-key.

"For a romance in such early stages it's incredibly intense.

"They are already talking about marriage and Brandon has said he may move to London to be closer to Camilla."