In this talk you will learn a couple of very important things about relationships. Looking at how we behave, or how we see things, when in love helps you understand this process better. Think of this as part of the background work you need to do to really understand the situation you are going to step into.
The more you know about relationships, and the more you make an effort to understand what happens to you, and to her, the more you are likely to make a success of it.
Helen Fisher has written some great books on the subject of relationships. This talk is a good starting point to understanding what love is actually about.