Nicolas Cage's ex-girlfriend, Christina Fulton, mother to his son, Weston, 20, is seeking to gain conservatorship of their son, she told RadarOnline.com exclusively.

Fulton and Cage are currently both at court in Los Angeles and are behind closed doors in the judge's chambers.

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Fulton is suing Cage for breach of contract in connection with a house that she says the Hollywood actor promised to buy her, but then reneged on.