Relationship

Okay. My bf never posts pictures of me on his fb or mention me in any of his post. He says it's because he don't want the world in our relationship. But I'm like show me off let them know your girl is chocolate pretty black..We been in a relationship for 3 1/2 years now. I have other kids and they look up to him as dad! All I want to know is am I over reacting or he's right??