My parents are both heavy christians. I've believed i was until i was about 10, i started to question if god was real. I am not a belever anymore, i dot have any faith in the lord. But i dont know how to tell my parents. Ive gone with them to church all the time, even after i didnt beleve, just because i didnt know how to tell them. Any idea how to break the news?

Good Luck!
Damn social rules and people who can't accept that their path isn't right for everyone. Like Avant-Garde said, wait until you move out. And even then, be cautious. Some parents are cool with it, but some can be very... prickish...
Just don't tell your parents that they can't be christians since they have a right to their belif too.