Robert Downey Jr. admits his drug addiction ruined his relationship with Sarah Jessica Parker.

The actor started dating the 'Sex and the City' star in 1984 after meeting on the set of movie 'Firstborn' but split in 1991 because of Downey's self-centered, wild lifestyle.

Robert Downey Jr. used to regularly bed his co-stars.

The 'Iron Man' actor claims Hollywood stars often enjoy on set romantic liaisons, and has confessed to seducing many of his colleagues in the past.