I'm a big fan of astrology - it is an incredibly intricate art and science with emerging relevance in science as well as pop culture. The idea is that DNA responds to light - the kinds of light in an environment deeply affect the way cells develop in response to their DNA.
If we know this, then can we not assume that the variance of starfall (light from stars and planets that reaches earth), which is different at every moment depending on the bodies in the visible sky, may then be correlated with our our DNA responds and our cells begin to develop? Even in the womb we are exposed to some filtered natural light, but the day of our birth - the day when we first experience raw natural light - must have a significant impact on our development!
If you are an astrological skeptic, I highly recommend Antero Ali's book Angel Tech: A Modern Shaman's Guide to Reality Selection. Using his techniques gave me a much deeper understanding of chart-casting, a whole new view on my personal development and my relationships, a greater understanding of my husband and some excellent insight into our wedding plans!
In particular for relationships, pay attention to the placement of Venus (The Magnetic Force: how we attract love, beauty and art to ourselves, as well as our sociability & relating style) and Mars (The Motivating Force: how action is initiated through the basic drive, urge for power and sexual instinct).
If you have any questions about how to interpret your Mars & Venus placements / aspects, leave a comment or send me an email - bexandBigO@gmail.com