My bf wants me to go to his but it's so nerve-wracking.. HELP?

We've been going out for 2 months and we're nearly 15. He thinks i''ve told my parents that we're going out but i haven't told them nd i absoloutly hate lieing but i know if i tell him he'll hate me nd if i tell my parents they'll be dissapointed cos all they care about is education. He asked me if i wanted to go round to his next week... i sed i don't mind but tbh i think it's a bit too early to be 1.meeting his parents nd 2. going to his house. if i do go i'd probably have to tell my mum i'm going to my friends but i'm not sure i want to go... how can i tell him nd how can i break to my mum that i have a boyfriend?