Dr Muhammed Khan is fighting for his career as a GP in Glasgow at a Medical Practitioners Tribunal Service hearing (MTPS).
His alleged victim can only be identified as "Miss A" and she has accused Khan of raping her when she was a 17-year-old student in Pakistan in 2001.
She told the watchdog panel in Manchester that over a nine-year period until 2009 Khan forced her to have sex and pose for explicit photographs.
Miss A claims Khan threatened to disgrace her by showing the photos of her nude to her father in Pakistan and friends.
It is against Islamic law for women to have boyfriends and a sexual relationship is taboo in Pakistan and with devout Muslim families.
Despite this, Miss A admitted to the panel she and Khan had a sexual relationship which continued even after she was allegedly "brutally raped" in 2001.
The incident is thought to have happened at the Khyber Medical College in Pakistan when Khan "lured" Miss A to the campus on a promise to hand over some pictures.
Defence counsel Anthony Hayworth refused to accept she was raped, and they instead confirmed their love for each other.
Miss A denied that but admitted their relationship continued for a further seven years and the two regularly exchanged phone calls and text messages.
But the relationship soured when Miss A, who was dating and has since married another man, refused to rekindle their relationship once Khan arrived in the UK in 2008.
It is claimed Khan then embarked on a campaign of blackmail because he was demanding Miss A should have his hand in marriage.
The MPTS is to ascertain whether Khan, who denies all the charges, has acted improperly as a GP.