He wants to keep our relationship private?

Today is my birthday and my boyfriend of 5 months posted a 2-3 pictures of me saying happy birthday on his “close friend” story. When I asked why it was only on close friends he said it was because he wanted to keep our relationship private.

However he has already introduced me to some of his friends and plans to introduce me to his family at some point. He says everyone he interacts with is on his close friends story.

What do you guys think of this?
He wants to keep our relationship private?
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