My parents think I'm a bad kid.?

They think that I ditch school and all of the bad stuff. The reason why they thought this was cause I got a D+ in my math cl last year. But that was only cause my teacher was a hard teacher and I couldnt understand the stuff!!!! They keep uming I'm dating behind their backs...they will nvr change the fact that I do. They always ume that I'm going out with a guy...any guy that I talk to as friends-.- Whenever I hang out with guys my parents get all cooku crazy. My parents arent together and had me at a young age and think that I'm going to follow their footsteps. My dad thinks I'm some sort-of rebel child..that has and ****. I told my parents that I was and unsure and my dad started bitching. He seems like he hates gay ppl... It seems like my parents think I'm on drugs. My dad always says your out of control..wen I dont even do anything!! I'm an honor student and I am NOT a bad kid yet my dad always tells me I am-_- How do I get rid of this stupid problem?!