How do I tell my boyfriend I have no friends?

I never really had that group of close friends everybody seems to have . I had friends over the years but no one ever stick around . The truth is I might hang out with a few people but I really do not have friends . I only have a close friend but we don't hang out that often like maybe once a month . He wants to meet my friends like I meet his but I don't know how to tell him this and he thinks I don't introduce him because I'm ashamed or something and this is ruining our relationship.
How do I tell my boyfriend I have no friends?
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