Hasnat Khan — British Scientist born on April 01, 1959,

Hasnat Ahmad Khan, FRCS is a British Pakistani heart and lung surgeon... (wikipedia)

It was in August or September of 1995 that I met Diana, Princess of Wales. Diana and I met through Oonagh Toffolo, whose husband was recovering from heart surgery at the Royal Brompton. At the time, I was working for Professor Yacoub, the heart surgeon, and Mr. Toffolo was one of his patients, so I was involved in his medical treatment and care.
Diana and I had a very good relationship with no personal problems. The only problem we did have was with the media, and the only place we could have any real privacy was at Kensington Palace, as they could not get to us there.
Really, I am just a guy who likes his profession and travelling and good food, and that is it. I'm no different from you or anyone else.
There is no way at all that Diana was mentally unstable. There is nothing wrong with expecting your husband to be faithful and being angry when he isn't. Diana had every reason to believe that Charles and Camilla never stopped seeing each other.
Generally, I do not talk about people - family or friends. This is how I am.