Just Trust Me... Okay?

So today I hung out with my new boyfriend. No big deal? Well, apparently I stayed out too late because when I arrived home at approximately 2:55 AM, every door to the house was locked. I knew the point of the test was to wake up my parents by calling them so that they could do whatever angry parents do to teenagers who know the laws. Unwilling to give in to their little game, I called first, my little sister. When she didn't answer, I broke down a little and called my brother. He is not one I would like to have to count on in this kind of situation but I needed to get inside. My only other way into the house is my sneaky escape and if no one had let me in, they would have eventually figured out how I got in. If they figure that out, then I no longer have an escape so calling my brother was my best option.
Of course, I already have an excuse mapped out. I don't really like getting in trouble, even if nothing more than a scolding occurs. I am just upset that they felt the need to lock me out to prove a point. I'm hoping that my getting back inside without awaking them will reverse this point and direct it at them. I am eighteen years old, an adult in society's eyes, with my nineteenth birthday just around the corner. I am in college; I have experienced freedom. They can't hold me in. Sometimes the bird doesn't get dropped out of the nest to test its wings. Sometimes it knows its wings work and it jumps out on its own. Well this bird got blown back into the nest by the cold winds of winter, but come spring, she'll be gone again. Holding her back is only increasing her desire to go further away.
My parents know that I wouldn't do anything stupid and they tell me all the time that they know. So why can't they trust me now. My leaving for college has changed the way they look at me. Obviously I am not going to do at home what I do in college. I know I have responsibilities and reputations to uphold here (that's mostly why I love college so much). They need to know that as much as I don't like it, I am the same person I've always been when I'm home. They need to continue to trust that person. Me. Ugh.