Yes, a couple of the same zodiac sign can marry. There is no astrological rule or universal restriction against two individuals of the same zodiac sign forming a romantic relationship or getting married. Zodiac signs are simply one aspect of a person's astrological profile, and they are not the sole determinants of compatibility in a relationship.
Astrology is a belief system that suggests that the positions and movements of celestial bodies can influence a person's personality traits and characteristics. It is true that some zodiac signs may have certain traits or tendencies that could potentially lead to a harmonious or challenging relationship dynamic. However, compatibility in a relationship depends on numerous factors beyond just zodiac signs, such as individual personalities, values, communication, life goals, and emotional connection.
Many successful and happy couples exist with the same zodiac sign, while others thrive despite having different signs. The key to a successful relationship lies in understanding and respecting each other's unique qualities, communicating openly, and working together to build a strong and loving partnership. Astrology can be a fun and interesting tool for self-awareness, but it should not be the sole basis for making important life decisions like choosing a life partner.