I am 16 years old and I have a boyfriend.I want 2 tell my parents but they dont want me to.How do i tell them?

I am a 16 year old girl and i have a boyfriend.My parents don't want me dating but its hard because i really like this guy.He's two years older than me and has the best personality ever.He knows that my parents don't want me dating and understands but i know he will get tired of it later down in the road.The thing is though when my sister was just only a year older than me,my parents let her date,but then she got pregnant.I believe thats why they are doin this to me so i wont do the same thing but they dont understand,im not her and im not going to do the same thing.My mom doesnt even want me talking to people on the phone later than 11 n its summer time!She also doesnt let me talk on the phone on school days and i have to be in bed my 9.this stuff aggravates me alot but what i really wanna do is tell her that i like this boy but i dont know how she will take it because my sister told me she asked her if the boy was my boyfriend when she dropped us at the movies and my sister lied and told her she dont know and my sister said my mom was talking about i dont need a boyfriend and all these type of stuff.SOMEBODY HELP ME!I need a solution or something.thanx