1. Intimacy and friendliness: A boy scratching a girl's nose is usually a way to express intimacy and friendliness, similar to gently patting or caressing, to show the intimate relationship between two people.
2. Mischievous and playfulness: Sometimes it also represents boys' playfulness and playfulness towards girls, increasing the fun of interaction and creating a relaxed and pleasant atmosphere through this action.
3. Indulgence and fondness: In some situations, a boy scratching a girl's nose may be a sign of indulgence or fondness, expressing his special emotions towards the girl in this way.