Sun Opposition Moon love Synastry ~ Different Backgrounds
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 Opposition Moon
A Sun opposition Moon aspect necessitates a reworking of your relationship expectations. Differences in background, thinking, temperament, and approach to relationships attract you together and then repulse you in what can become a repeating cycle. When the Sun person is in opposition to the Moon person, you will have a frustrating time trying to get your emotional needs met.