I have no idea what to do. Help?

Okay, so me and my boyfriend, let's say his name is Chris, have been going out for six months. I love him so much and he loves me. I'm only 15, and I'm "too immature" and crap but I really feel it. One time, I was at his house, things got out of hand, and sh*t happened. My parents found out and banned the relationship immediately. That was four months ago. Me and Chris still go out, we find it really hard though, we can't see each other as easily as when Mom and Dad knew about him. It's fricken' heartbreaking. I've tried reasoning with my parents, but nothing has happened because of it. It's really hard, I keep telling myself that today's the day, that Mom and Dad will finally give me a second chance, but it never happens. I don't know what to do, I feel bad for Chris all the time, he deserves someone he can see often. I've tried my best. What should I do? Thank you so much for answering. ♥