Associated object is not set correctly after creating with belongs_to and has_one associations

Hey,

I've got 2 models: User and Account::Website that look like this:

class User < ActiveRecord::Base
  has_one :website_account, :class_name =>
"Account::Website", :dependent => :destroy
end

class Account::Website < ActiveRecord::Base
  belongs_to :user, :touch => true

  before_validation :assign_new_user, :if => :user_missing?

  protected

  def assign_new_user
    self.user = User.new
  end

  def user_missing?
    user.blank?
  end
end

The problem is with the following code:

website_account = Account::Website.new
website_account.save
website_account.user => returns persisted
User object
website_account.user.website_account => nil

If I reload the user object, then it correctly returns website
account, but shouldn't it be set automatically by Rails?

Cheers,
Szymon