What is he hiding?

So currently iam in a ldr for 8 months now. I know him for 1 year now. we both are from different countries. We both are uni students, iam medical student and he has taken education. So, the problem is that he told me his fake name and I got to know his real name just a few days ago and I have proof too. I just ask him like whose name is this, is he ur friend ? Like that so he dont think I know about his real name, I wanna hear the truth from his mouth. So he told me he will tell me later. We both are busy so we only text, but whenever I ask him to do ft, he decline says he is not comfortable and I understand coz most of us are shy too. So I took it lightly. Whenever I ask about his family and his friends, he never tell me about them as I was just asking about their surface details . he only says when u will be here u will meet them. He told me that we have to keep our relationship private in real life and we can keep public on the internet . past days I ask him to give his address so I can courier him some chocolates since he like it slot and he told one time that whenever he is studying late or is sleepy, he like to eat chocolate . so I thought this will make him happy, first he agree and then disagree. I dont know.whats happening with him. Can u tell me what it possibly mean and what can I do ?. Thank u so much have a great day or night 😄✨✨❤️