Internet meeting

I met a guy on the Internet. We just started talking nothing interesting... but then I started getting feelings for him and after a while he asked if i wanted to be his girlfriend, I said yes. But he lives 2 hours away at least he came for my birthday and it was the best day ever. The problem is im scared to tell my parents about him because im 13 and he is 16, what should I do?? (Ps. no we didn't do anything sexual that day en we didn't even talk about it)