Sure, Astrology can give us indications of great sex in synastry, but can it indicate bad sex, too? Here are some aspects which may indicate sexual incompatibility. Note: These aspects, on their own, do not necessarily indicate “bad sex”. Supportive aspects can negate these influences.
Mars square/opposite Mars:
In astrology, Mars represents our sexual style. When your Mars squares another person’s Mars, it indicates that your sexual styles are at odds. You express your sexuality in different ways, which can indicate sexual incompatibility. Squares cause friction, so it may be difficult to reconcile these sexual differences. Your body rhythms may not match well, which can result in disappointment for both of you. For example, Mars in Taurus natives enjoy natural, physical sexual expressions. They are not fond of spontaneity or variety when it comes to love-making. If a Mars in Taurus person partnered up with a Mars in Aquarius person, this may spell trouble. Mars in Aquarius intellectualizes sex, which may confuse the Mars in Taurus person. Mars in Aquarius seeks plenty of variety in sex, and tends to enjoy the “idea” of sex more than the act itself. This would obviously be a problem for sensual Mars in Taurus, who needs plenty of physical contact to be satisfied. The opposition is not as problematic as the square, but the sexual differences remain.
Mars square Saturn:
Saturn is the planet of restriction and discipline, while Mars is the planet of sex and aggression. When these two planets collide in synastry, sexual problems may plague the couple. Saturn may block, hamper, or limit Mars’ sexuality. Saturn may feel disappointed with Mars’ performance in bed, generating anger and hostility between the couple. This can result in the decline of Mars’ self-confidence when it comes to sexual matters.
Mars square Uranus:
Hard aspects from Uranus to another person’s planets in synastry often indicate an on-off energy in regards to the planet involved. This aspect doesn’t necessarily indicate “bad” sex, but can indicate sudden shifts in sexual interest on the part of the Uranus person. At first, the sex is likely to be electric and fulfilling, but over time, the Uranus person may tire of the sex and seek excitement somewhere else.