Not necessarily. There may be many reasons why boys are willing to spend time teaching girls new skills, among which liking her is only one possible reason.

There are other reasons, such as the boy wants to share his knowledge and skills, or he thinks this girl has great potential and talent and wants to help her improve her ability and self-confidence. In addition, boys may also think that this is a social way to enhance mutual understanding and interaction.

Therefore, it is not certain whether boys spend time teaching girls new skills because they like her, and it needs to be further judged according to the specific situation and the personal wishes of boys.