A1: When Sally met Harry first time, she had some bad feeling about him for his intimate behavior with a girl and also his opinion about the relationship between the genders. They spent several hours on the way to their destination and argued a lot. Although Harry thought Sally attractive, joking or not, they still separated after the trip and didn't expect to meet again.
A2: Harry keeps a philosophy that there exists no pure relationship between males and females. Males and Females get close and then go to bed naturally, or they separate or stay away. In my view, I agree with Harry’s since people always are attracted by opposite sexes and it is human’s nature.
A3: After 15 years, they meet each other the third time when both lose their love. They begin to talk and surprisingly find that they can talk happily with their different philosophies. They try to tell others that they are just friends with a pure relationship but they cannot cheat themselves. The only thing they need is a little more courage to admit it that they have found their right person. That is the time when they fall in love with each other.