career in essence around a lot of other young men who were going to make their lives in the military. there was a lot of heavy drinking going on and partying going on. reporter: was he faithful to her? yes, he was. there were indiscreet moments girls came up to him and there was kissing. she handled it well but she didn t end the relationship. it was probably difficult on their relationship. she was having scrutiny from the press. she walked out of her flat and be besieged by photographers. it couldn t go on. they would follow her to work and stop her in traffic with flashing through the window while trying to drive her car. waiting for her to leave her office. that s when it s really stressful. excuse me. hey! hey! hey! reporter: all reminiscent of what happened to his mother. look at the images.
of other young men who were going to make their lives in the military. there was a lot of heavy drinking going on and partying going on. reporter: was he faithful to her? yes, he was. there were indiscreet moments girls came up to him and there was kissing. she handled it well but she didn t end the relationship. it was probably difficult on their relationship. she was having scrutiny from the press. she walked out of her flat and be besieged by photographers. it couldn t go on. they would follow her to work and stop her in traffic with flashing through the window while trying to drive her car. waiting for her to leave her office. that s when it s really stressful. excuse me. hey! hey! hey! reporter: all reminiscent of what happened to his mother. look at the images. for diana, the pressure was too much to bear.