Sun Opposition Mars love Synastry ~ Competitive Bond
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 Mars
A sun opposition Mars aspect causes each of you to assert independence but attracted by your partners romantic inclinations. You certainly know how to compete with each other. With the Sun person is in opposition to the Mars person, you will feel more pressure to do things your own way and to perform well at physical lovemaking. All too often this energy can express itself in conflict as your egos battle it out for supremacy.