Venus and Mars, separately
In a single chart, Venus describes what you find beautiful, how you show affection, and what you value. Mars describes desire, drive, and how you go after what you want. Neither is tied to gender. Everyone has both, and both play a part in how they love.
When they meet across two charts
Conjunction
The two planets sit together. The attraction is direct and hard to miss. It can feel immediate, sometimes before anything else about the relationship is clear.
Trine and sextile
Affection and desire flow together easily. What one person likes is close to what the other naturally offers. Sextiles are softer and grow with attention.
Square
Strong attraction with friction. The timing or style of one person's desire doesn't quite match the other's idea of affection. It can be exciting and frustrating in equal measure. Talking about what each of you actually wants helps.
Opposition
The two face each other across the zodiac. Each person can feel drawn to qualities they don't have themselves. The pull is strong, and so is the need to meet in the middle.
Venus–Venus and Mars–Mars
When two Venuses connect, it describes shared taste and how similarly you enjoy life. When two Mars placements connect, it describes how you act together, as a team or as rivals depending on the aspect.
Keep it in proportion
A Venus–Mars contact describes chemistry, not commitment. Relationships without one can be deeply loving, and relationships with one can still struggle. Read it as one thread among many in two whole charts.