Raising an eyebrow can be a subtle and non-verbal communication gesture that conveys various meanings depending on the context and the person doing it. It's important not to jump to conclusions based on one isolated gesture, as body language is complex and can be influenced by many factors. However, I can offer some potential interpretations for why a guy might raise his eyebrow when looking at you:
Surprise or interest: Raising an eyebrow can be a sign of surprise or intrigue. It could indicate that he finds something you said or did surprising or interesting.
Flirting or teasing: Some people use raised eyebrows as a flirtatious or teasing gesture, especially when they are being playful or trying to get your attention.
Non-verbal response: He might raise his eyebrow as a natural reaction to something you or your friends said, without it being directed specifically at you.
Agreement or acknowledgment: Raising an eyebrow can also be a way of showing agreement or acknowledging a point made during the conversation.
Subtle communication: In some cases, people use facial expressions like raised eyebrows to communicate something without saying it aloud, perhaps sharing an inside joke or reacting to a shared understanding.
Habitual behavior: It's also possible that he raises his eyebrows unconsciously, and it might not carry any specific meaning.
To truly understand the intentions behind his gesture, pay attention to other aspects of his body language and behavior when he interacts with you. Look for other signs of interest or attraction, such as prolonged eye contact, smiling, mirroring your movements, or seeking opportunities to talk with you one-on-one.
However, it's crucial not to read too much into a single gesture. People's body language can be influenced by various factors, and it's essential to consider the overall context of your interactions and the guy's personality before drawing any conclusions. If you're curious about his intentions, the best way to know for sure is to engage in open and honest communication with him.