In the chapter, Understanding Interpersonal Communication, Beebe, Beebe and Ivy give insight into the role of communication in building relationships. There are many sources for this kind of information available and the broader your knowledge base the more likely you will have information that will aid you in reaching your goals.
This book, "he's just not that into you," is plain spoken and easy to read. For some, the authors Greg Behrendt and Liz Tucillo will have some insights that may fit the conditions in which you live. Rather than waste time on relationships that aren't going anywhere, learn to recognize where it may be wiser to spend your time and energy. Avoid becoming dependent on anyone who finds you merely convenient. Look for someone who shares your idea of what your relationship should be and spend your time and energy there.