Should I be annoyed that she’s bringing her guy friend?

I invited this girl that I’ve been casually seeing to watch me perform (she and I work in entertainment, and this is a new job). This is a guest list situation so she asked if she could bring a friend, and I said no problem. Turns out, this friend is a guy. Just wondering if it’s normal for me to be annoyed, or if I should just chill out. I haven’t met her friends before, and I do want to know more of her circle.
Yes, it’s normal
Nah, chill out
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Should I be annoyed that she’s bringing her guy friend?
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