Don't tolerate second class behavior!
What do I mean by “second class behavior” you wonder? Flaking, not returning phone calls, canceling dates repetitively with short notice, being unavailable more often than a reasonable person would, being “busy” all the time and alike are all signs of second class behavior that you have no reasons to tolerate.
Putting up with the above treatment from anyone has a double harmful effect on you: first, it hurst your self-esteem and self respect because when you accept this kind of treatment from another person, you communicate to him / her and to yourself that you don’t deserve any better and that your time and life are not valuable and thus can be “played” with or disregarded with ease; secondly, any dating situation or relationship in which one person treats with the other with lack of basic respect is doomed. Whoever hopes that their partner’s inconsiderate attitude and conduct will change and improve is deceiving himself. In the vast majority of cases it doesn’t, but it even gets worse. As a person gets away with more and more, he / she will take advantage of your tolerance more and more - something that will hurt you more and more as well.
So, don’t waste your time on anyone who doesn’t reciprocate your attention. There is no reason to. Move on without hesitation and pursue relationships with those people whose sense of personal responsibility and respect for your time and life make them worthy potential romantic partners.