Mars shows what a woman is attracted to in a man. Being with a man who is strong in her Mars element, or who makes close sextiles with her Mars, makes the relationship much easier, and increases sexual desire and compatibility. For a man, his Mars is part of his masculine nature, so it is best when his partner also relates well with this element.
Mars Sextile Pluto
You will be looking for opportunities to unleash the power of your desires, to assert your power, dominance and sexuality. Expect competition. Your willingness to dare is attractive to your romantic partner, as is your intensity. When the Mars person is sextile the Pluto person, expect a power struggle, each of you has a possessive streak and you are both ready to go to extremes of emotional experience in order to penetrate to the core essence of love and sexuality.