People say that this is something you can give off or notice in others. That is, you recognise whether someone you are talking to is looking for a relationship or something casual. Similarly the vibe you are giving off can also lead to one or the other. I wonder what the most obvious examples of this. Like for example, if you talk like someone who wants to be a girl's friend, is that automatically a relationship vibe? So what can you do to not have that? Not be so friendly?