I dont know why but for some reason i'm really shy about introducing my boyfriend to my friends and family.?

I have always been shy. And I always felt like Ive been judged my whole life family and so called family friends. How do I get over this fear of letting my boyfriend be known and I be known to his family. We have been together for like 6 years. What should I do to get over this fear of letting it be known that I am with him. I'm tired of hiding this!