How to tell your parents you like someone, and might go out with them... please help!?

im in 10th grade and my parents have always been like, you dont need a boyfriend anytime soon... blahh. and they ask if my other friends like kiss theyre boyfriends and stuff like that. and i feel uncomfortable with that whole subject all together. im a christian also so the whole no sex before marriage thing and all that makes me feel extra weird. so i like this guy and we talk a lot and they dont know, should i tell them or wait to see if he asks me out? if anyone feels like this i would like to know... thanks soooooo much <3