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On screen, the Tenth Doctor engages in romance with the following characters:

Other characters have shown attraction to the Tenth Doctor - most notably Martha Jones, Jack Harkness and Lady Christina da Souza ("Planet of the Dead") but this has been one-sided. Sarah Jane Smith does not count as she references in "School Reunion" having fallen in love with the Fourth Doctor. River Song ("Silence in the Library"/"Forest of the Dead") does not count as her romance was with the Eleventh Doctor.