Sun in the Fourth House
Composite Sun in the fourth house favors a strong emotional involvement.
The fourth is the house of your most personal and intimate life, your home, your past and origins in general, as well as your inner feelings and emotions. Thus this position favors a relationship in which you settle down together and share each other's personal lives as intimately as possible.
This is one of the best positions for marriage. It indicates a concern for owning a home or real estate together, which may manifest itself as a desire to own land.
On the psychological level, you are likely to experience profound emotions together and to become deeply involved in each other's innermost mental and emotional depths.