My parents don't trust me?

A little more than a year ago, I was going out with a guy (he was my first boyfriend, I was 13 am 14 now, we are long broken up) and we used to listen to the radio and text eachother about the songs. One time "Bedrock" came on and he texted me "I could make your bed rock haha jk jk jk". They saw they text and were disappointed. I know he was joking. I'm a strong Christian and would never have sex before marriage. In three months of dating me and this guy never even kissed. Now my parents think I'm going to go to (church) camp and get pregnant. I have a 4.0 GPA and responsible. I'll be going into high school next year, and i'm afraid they won't let me date. How can I gain back their trust?