My girlfriend doesn't follow my Instagram. Her account is private. She is doing something behind my back?

My girlfriend doesn't follow my Instagram. Her account is private. I asked her why she doesn't want to follow my account. She said She feel I'm controlling her when I talk about that. But I think she is doing something behind my back. What do you think?
My girlfriend doesn't follow my Instagram. Her account is private. She is doing something behind my back?
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