By far, Capricorns are the most trustworthy sign. You will never have to worry about your deepest secrets being uttered to anyone else because this sign locks them up. If a Capricorn says they will do something, they will follow through because their word is meaningful. It would take something significant for them to break a promise. Capricorns thrive when things are in order, and feel balanced when they do the right thing. All of this combined means they will keep the secrets of their loved one for life, no matter what.
Cancers are emotionally driven and love strongly when they genuinely care for someone. Because they would do anything for the people they love, this makes them the second most trustworthy sign. Cancers would give the shirt off of their backs to help someone in need, and they have a strong moral compass to help guide them between right and wrong. They make you feel comfortable when you speak to them, and you can be assured that your secrets will be kept under lock and key for life.
When Libras aren't comfortable around someone, they can come off as gossipy or attention-seeking. However, once they get to know someone and care about them, they are driven by love. They will be there for you through thick and thin, no matter the circumstances. When a Libra is passionate about something, they can be incredibly driven and determined. They understand that with any relationship, whether it's friends, family, or a partner, they have to take the time to nourish and commit to them.
Although Scorpios have a reputation for being mean and come off as harsh, they will never be untrustworthy. Scorpios are known for getting attached to certain people, and when they do, they will go to the ends of the earth for them. This is one of the most loyal signs out of all the zodiacs, and if they care, they won't disappoint you. Once you have caught their interest, they will be there for you for life. If you are just acquaintances, they usually don't care and might come off as cold or distant.
Virgos are usually worried about something. However, this worrisome attitude is critical when it comes to measuring their trustworthiness. They make sure their loved ones are doing well and find solutions to help them. Virgos will go out of their way to take care of someone, and people don't realize that they will do whatever you ask of them. They put in the extra effort, and they enjoy being needed. You can tell when a Virgo is not your friend if they become flaky or passive. They cannot pretend to be interested in someone.
Aries are lead by logic, so they rarely make decisions based on their emotions. If something no longer works for them, they will make immediate changes, even if that means leaving a friend behind. Aries will do whatever they feel best fits a situation, but that doesn't mean they can't change their plan of action later on. While other signs will stick with you for life, an Aries can't guarantee that bond. They think about the bigger picture and try to find a solution that will help everyone, not just one individual.