I saw this girl when I was parking my car last night. She was crying. She explained she had a terrible fight with her boyfriend while he was giving her a ride home earlier, which ended in his pulling over and forcing her out of the car.
Eventually I lowered the window and he said: 'Hi, can you help me . I took the risk. He explained to me that while he was driving they had had a terrible argument and that he had decided to get out of without thinking that it was raining and that he was far from any town or village.
I really don't understand why in the first example it is past simple and in the second one it is past perfect . For me both situations happened before the explanation and should be past perfect and the argument was completed at the time of the explanation