Sun Trine Saturn love Synastry ~ Common Goals
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 Trine Saturn
A Sun trine Saturn aspect creates an easy flow for the partners realization of goals which will enhance mutual security and material status. Your emphasis is outward on achievement and can lead to wealth and prosperity. With the Sun person trine the Saturn person there will be nothing to stop you from setting emotional and boundaries and organizing your domestic life so that you can focus on energies which will carry you through testing times and strengthen your relationship.