Loyalty is important to the success and stability of any lasting relationship, but you can't force loyalty on anyone. The Sun signs that are the most likely to be loyal and dependable are those that are cautious and take their time getting to know and gaining trust their potential partners.
Most Loyal and Dependable Astrological Signs
Once committed the Sun signs below are fiercely loyal and dependable. At their best, individuals with their Suns in these signs can be trustworthy, faithful, supportive, and respectful of their coworkers, friends, lovers, and mates.
Sun in Capricorn
Capricorn is the Cardinal Earth sign that's ruled by Saturn, the planet of commitment. Because Capricorns have integrity and are determined to succeed in whatever they do. They work hard to make a relationship successful and don't give up when the going gets tough. Capricorns are some of the most faithful, trustworthy, and loyal individuals in the zodiac.
Sun in Scorpio
Scorpio is the Fixed Water sign ruled by Pluto, the planet of death and rebirth. A Scorpio's behavior is driven by their dark emotional nature. They must know that can trust a person, are cautious, and don't rush into any relationship. However, when a Scorpio determines a person is worthy of their trust, they are loyal to the end and will courageously go to bat for the person and be their number one supporter and defender.
Sun in Taurus
Taurus is the Fixed Earth sign ruled by the Moon and Venus, the planet of love. A Taurus craves comfort and security and will do anything to maintain stability and peace in their lives. They abhor change and once they commit to someone they hold on for dear life. For a Taurus it simply causes too much drama, strife, and complication to be anything other than loyal and dependable.
Sun in Libra
Libra is the Cardinal Air sign that's ruled by Venus, the planet of love and relationships, and Saturn, the planet of commitment. Libra also rules the astrological seventh house, the house of one-on-one relationships. A Libra's life revolves around committed relationships, and they are inherently sincere, loyal, trustworthy, trusting, and committed to those the love and care about.
One Important Caveat
The above astrological Sun signs, on their own, are inherently loyal and dependable, but all bets are off if the personal planets (Sun, Moon, Mercury, Venus, Mars) in the person's birth chart make challenging aspects to their natal Neptune, Uranus, Jupiter or Pluto.
Calculate a Birth Chart
AstroSeeker has a free tool that will calculate a birth chart; scroll down and it also tells you the planetary aspects.
Finding Loyalty in an Entire Birth Chart
A more important indicator of loyalty and dependability than a person's Sun sign is the placement of the planet Saturn in their birth chart. Saturn, the task master of the zodiac, may seem like a bit of a joy killer but when Saturn makes aspects to the personal planets (holds sway over) it adds restraint, seriousness and maturity to an individual's character; all of which are qualities that bode well for loyalty.
Saturn With the Sun, Moon, Venus or Mars
When Saturn is in aspect to the Sun (your will to be,) the Moon (your emotional needs,) Venus (how you give and receive love,) or Mars (how and for what you'd fight), it can indicate an individual that possesses the potential for loyalty and dependability as well as the ability to be a lifetime partner.
Saturn in the Seventh House
If Saturn is in the seventh house of a birth chart, it suggests that the person would be a responsible and mature partner, as well as one who takes their partnerships seriously and will often go to any length to fulfill their responsibilities in partnership.
Don't Jump to the Wrong Conclusion
Though some Sun signs are more likely to be loyal, the reality is that every Sun sign has the potential to be a loyal, dependable, and trustworthy partner or a cold-hearted jerk. It's hard to stereotype loyalty and dependability, because it can't be wrapped up into one neat little Sun sign package. So before jumping to some wrong conclusions consider personal history and seek the advice of a professional astrologer.