Venus is the planet that determines the sexual behavior of an individual. Astrology elucidates that abnormal sexual orientation is a psychological disorder that is related to the malefic influence of Venus in the birth chart (horoscope) of a person. Different planet individually and in combination influences Venus to give variable results that mainly affects the sexual behavior in a person. However, various other astrological factors play a vital role in shaping the sexual behavior in an individual.
Source: Chauhan et al. Int J Ment Health Psychiatry