Esquiress, after we finish being co-authors on the book about how technology has made dating more complicated, I am writing a book for guys entitled "She is definitely not into you at all." It would be similar to "He's just not that into you," but would spell out how to tell a girl is not interested (like, if she doesn't call you back after you left multiple messages, she is definitely not into you at all or if she never wants to make plans with you, she is definitely nto into you at all). Somebody needs to do it.