What does it prove that a woman doesn’t want to travel with her boyfriend?

I think there are two possibilities for this problem. First, this girl is very conservative and has very strict requirements for herself. She will never do anything out of the ordinary. Second, in this situation, Society, her unwillingness to go out with her boyfriend only proves that she does not really regard him as her boyfriend and does not love him that much, so she does not want to develop further with him