I've ruined my social life. How can I fix it?

Okay, this is a long story. But here goes: So my family is incredibly nosy. I mean seriously. I'm a private person. I like my social life to be private. I clash with my whole family. For example, I got a ride home with someone and my mom was waiting at the door and the minute I walked in, I got bombarded with these questions: "Who was that? Where are they from? How do you know them? What grade are they in? Are they a good driver? How long have you know them?" etc, etc, etc. Well, this really irritates me. And it's been like this for years. It's gotten so bad that six years ago was the last time I had a friend come over. Since I never had my friends come to my house, they all umed that I didn't want to be friends anymore so they stopped talking to me. Now I have no close friends. I have a few, but none that I feel totally comfortable around. My best friend thinks I'm anti-social so she won't ever ask me to hang out with her and she doesn't invite me to be with her