Venus shows what a man is attracted to in a woman. Being with a woman who is strong in his Venus element, or who makes close sextiles to his Venus makes the relationship much easier, and increases sexual desire and compatibility. For a woman, her Venus is part of her feminine nature, so it is definitely best when her partner also relates well with this element. When people have positive Venus synastry, they naturally like and love each other. That, of course, is what makes positive Venus synastry so great.
Venus Square Mars
You are attracted to your partners sexual passion, they to your gentleness, but both of you approach relationships in your own way. Passion may be expressed as friction, argumentativeness, and competition between your competing styles. When the Venus person is square to the Mars person, they are put off by disharmony but fired up by your amorous attentions. You may find this works better for dates than it does for domestic situations. Whenever the sexual fireworks die down, you can find each others presence unfulfilled.