@GracieGirl,
GracieGirl wrote:Matt's only 3 years older that's not much of an age difference. Is it bcuz I'm a girl? Isn't he being mean and showing favorism just because Matt is a boy?
Yes it is about age. Three years is a big difference when you are 13. Yes it is because you are a girl. Some dads are like that because they know what it is like to be a teenage boy and because they are old fashioned idiots, but at heart it is because he cares for you and is trying to do what he thinks is right, misguided though it may be.
Your best approach here is to have a good sit down with your dad with two goals. The first is for you to understand his concerns. The second is for you to point out that you are becoming the mature, responsible young lady he raised you to be and you haven't given him any reason to distrust you (unless you have, but that is another post.)
PS: Max is completely right.