Why does my boyfriend of 3 years refuse to post me on his social media?

Hello everyone this is the first time I’m posting a question on reddit, I hope you all are well. I have an issue with my boyfriend of 3 years. We’ve been in an ldr and haven’t met yet but we plan to meet soon. There has always been a problem of him not wanting to tell his friends about me, because he said he did not want to hear their judgements about us because it would bring negativity and that he is a private person. While he has till now told a few close friends about us because it had been upsetting me as I felt like a secret, he has clearly told me that he does not want to post me on his social media. The reason he gives me is that he is a private person, and that he doesn’t want to share his love life so publically because it is no one’s business. He has added that while he cannot go and tell people about me, if someone asks him, he would mention that he is in a relationship. While I completely respect that, there is something that has been worrying me, he has mentioned in the past that if I was there with him physically, all his friends would know about me. Also, he said he would be more comfortable to post me on social media once we get married. When I asked him why he said, “I don’t know, it’s just that it is official”, which made me a bit uncomfortable because then, I wondered what I am to him right now. He says he is sure about us but I do not really understand him. How should I understand his perspective better, because while I totally respect his right to privacy, his reasoning confuses me and makes me anxious about my place in his life.