How can i tell my parents that i have a boyfriend?

My family are Christan and they don't let me have a boyfriend until im 18 and he has to be christan, but im afraid i already broke the rules im 16 and i have a boyfriend he is not christan i really like him a lot.we been going out for 4 months his really nice to me really respectful he does everything for me and im pretty sure were going to stay together for a long time. we only see each other at school and sometimes out of school when the church teen go out i invite him so we can see each other, but im tired of trying to hide him all the time i feel like just breaking up with him sometimes cause i know my parents wont accept him,but i really really like him i don't know what to do...PLZ HELP!!