Why are some people so inconsiderate

In this case, explaining to your friend that her behavior hurts your feelings by making your meeting together appear unimportant may be enough to get her attention. In other cases, it may be a simple situation of saying "no" to this friend - to borrowing money or possessions that never get returned, for example. And there may be a rare instance where your friend's inconsiderate behavior is enough to end the relationship – and your frustration – once and for all.​​​​​​​