Excerpt from my latest Sasstrology article (please leave comments on the Sasstrology site):
"Two people can be in the same relationship, but experience it in totally different ways. When assessing astrological compatibility, synastry (comparing one partner’s chart to the other) is ground zero. But once the partnership is established, it’s revealing to compare the Composite chart to each natal chart. This will tell the story of how each person feels about the relationship — whether it’s comfortable for one and restrictive for the other, or whether the relationship means the world to only one partner."