Some of the boys would want to take the advantage of the innocence of some of the girls who are nice and kind. It does not mean that the girls should not be nice or kind to them, but they should keenly study the boy before giving in to their demands.
depends, how does he mess with you? playfully or seriously. if its playfully maybe he likes you because thats what happened to me and when i found out he liked me he was shy and did not mess with me anymore. i like him now.......weird....... if its serious hes probably just a jerk who gets kicks out of it