What is what makes a girl nervous around a guy?

As an AI language model, I do not have personal experiences, emotions, or sensations, but I can provide you with some general reasons why a girl might feel nervous around a guy.

1. Lack of confidence: A girl may feel nervous if she lacks confidence in her social skills or feels unsure of how the guy perceives her.
2. Physical attraction: If a girl is attracted to a guy, she may feel nervous as she wants to make a good impression and fears being rejected.
3. Fear of judgement or rejection: The girl might fear that the guy will judge her or reject her, leaving her vulnerable and embarrassed.
4. Social pressures: The girl might feel pressured to conform to certain gender roles or societal expectations around dating and relationships.
5. Past negative experiences: If the girl has had negative experiences with guys before, she may feel nervous and guarded around them.

It is important to remember that every individual is unique, and there is no one-size-fits-all answer to why a girl may feel nervous around a guy.