Sun Square Venus love Synastry ~ Conflicting Purpose
The Sun is the source of all energies. These energies stimulate the activities of the houses occupied by the transiting Sun and reinforce or weaken the planetary effects, depending on the Sun's aspect to the natal planet. When the Sun transits an inner planet, it may trigger a dormant aspect between that inner planet and a slower moving outer planet. If a planet is being transited by another planet when it is being transited by the Sun, the effect of the transit is strengthened.
Sun Square Venus
A Sun square Venus aspect increases sexual attraction but challenges your purpose in being together which is to create and express beauty romantic expression of love and harmony. With the Sun person square the Venus person, your romantic and domestic needs can be frustrates by your partners approach toward the relationship.