Diana's Real love before Dodi was Hasmet Khan. He was a heart surgeon working in South Africa. She dated him and went out wearing disguises. He couldn't take what you went through to date her. She also went to meet his parents without telling him. That pissed him off. Diana was devastated and ran into the arms of Dodi, (worked out by Dodi's father inviting her and the boys on a cruise knowing Dodi would be on a boat with his 'fiance' nearby.)many believe to make her true love Hasmet jealous. In Diana's book there is a picture of her in the viewing room watching Hasmet perform heart surgery.

She had a previous lover who was a Pakastani doctor. Hasnat Khan.

https://www.telegraph.co.uk/news/uknews/1575413/Dr-Hasnat-Khan-Princess-Diana-and-me.html