What does it mean for a boy to touch his arm on purpose?

Boys deliberately touch girls' arms, which is physical contact, a manifestation of liking a person, or a personal habit.

If you want to judge whether a boy likes you or takes advantage of you, you can observe it from his work habits. If he likes joking at ordinary times and his quality is not good, then the possibility of taking advantage cannot be ruled out, so he should stay at a respectful distance from others, and there is no need to guess foolishly.

In high school, my deskmate was a boy. He is an introvert and doesn't like language expression, but he always touches me with his arm on purpose when something happens, such as: Do you have an extra pen to borrow, lend him lectures and so on. Therefore, whenever he touches my arm in class or between classes, I know that he wants to borrow something from me, and it has gradually become a habit of each other.

Moreover, I also know that he is not a person who takes advantage of others casually, because he is usually unsmiling, has a rigorous and mature attitude and has a good reputation among his classmates. So, the question of touching his arm on purpose doesn't matter.

In a word, boys intentionally touching girls' arms has many meanings, and we should treat them correctly in either case. If he has a crush on you, don't worry, because time will tell. Or, you can take the initiative to feel, and you will find the answer.