I was told by some girl my friend knows and was talking to that I "seem like the nice guy". I've met her twice and never really talked to her. Obviously I must have had some kind of vibe over me but I cannot pinpoint what. I might not be the most talkative of me and my friend but that doesn't directly equal to nice guy. My body language was generally calm and confident so I'm honestly confused.

My question is two in one, how to not give off "nice guy" vibes/what are they typically? and how to deal with people from your past who definitely see you as the nice guy? In my experience it's tough to break free from whatever people label/categorize you as.