Signs marked with asterisks, you can confide in, but in accordance with the following instructions.
Aries*
If you've told a secret to an Aries, be careful not to make them angry, because they will, on the spur of the moment, blurt everything you said, no matter who is listening. They won't do that intentionally, but because they act first and think later. And if they reveal something you would prefer to remain hidden, you may find yourself in an awkward situation.
Taurus*
Taurus is stable and persistent, but you can confide in him/her only if you are sure that s/he agrees with you. If that is not the case, keep the secret for yourself. Taurus will try to explain to you that it is not very smart to complicate your life without a reason. Test him with; “what do you think about...“, and if s/he is ok with it, it is safe to tell him/her a secret.
Gemini
This sigh is an embodiment of loquacity, do not you ever confide in him/her. Even if they have no intention to tell off your secrets, s/he will blurt out the truth to someone who will spread the story. So, be careful when you confide in Gemini.
See also: ZODIAC SIGNS: THIS IS HOW YOUR ASCENDANT AFFECTS ON YOUR PLEASURE IN BED!
Cancer*
Cancer is trustworthy and loyal, but if your secret will make him cry, keeps your mouth shut. S/he will offer a shoulder to cry on, a consolation, a cup of tea, or anything that can help you. All in all, you can count on Cancers; if they care about you, they will never reveal what they know.
Leo*
Do not tell Leo those secrets that can tempt him/her to boast or brag about. If the secret is about a person s/he doesn't like, it can be very interesting. If s/he can help you to beat someone, s/he will definitely be by your side.
Virgo
Discrete Virgo will keep secrets you told as long as you are close. If you ever become estranged Virgo will start to tell tales about you and everything you said. So, if you are on good terms with Virgo and intend to keep it that way, only then you can confide in him/her.
Libra*
They are great friends, really, but some circumstances may lead Libra to consider whether to reveal the secret or not. So, underneath their charm, there is no true confidentiality. They gladly spread their friend's stories, with good intentions, of course.
Scorpio
Walking secret is Scorpios middle name. Even if they were tortured, they would keep quiet. They understand secrets because they have plenty themselves. If something is made public, it loses its charm. You can freely confide in them everything you want, even if you conspire against someone, they'll watch your back.
Sagittarius*
If it weren't for their innate talkativeness, they would be great friends. Especially if they start talking over a drink, they don't know when to stop. It can happen that they begin to talk about everything they know, and about anybody who have ever confided in them.
See also: THE END OF THE WORLD: WHAT THE LAST MOMENTS IN EACH SIGN'S LIFE WOULD LOOK LIKE?
Capricorn*
The real “grey eminence“ of the horoscope. They have the ability to discover secrets that you didn't even intend to confide. Capricorns know how to benefit from keeping their lips sealed because you will have to do something in return. Their finances are their biggest secret.
Aquarius
If you want Aquarius to keep your secret, the secret itself has to be extremely eccentric. In all other cases, they will laugh at you, for you consider such a normal thing to be a secret. At the first opportunity, s/he will tell everybody what s/he knows with a bunch of humorous jokes.
Pisces*
There is no big risk with Pisces. The will, probably, forget secrets you told them, and if they don't, they will keep them forever. Pisces are very secretive and accordingly, they like people who have secrets. But, never confide in them something that opposes their emotions.