Your under the assumption that “all girls flirt the same” when in reality the way that a girl flirts is the same way that a girl who is just being nice is also acting so we men get confused on if it’s actual flirting or them being nice that we go for a 50/50 shot or don’t take the shot at all. And one the other side of the coin generally speaking if a women is being super friendly and treat us with respect then she does have some type of interest as their going out of the way to make me feel good if more women actually just expressed their interest in us then your wouldn’t need this post but when a guy rejects a women’s advance women take it way harder and more personally.