Trust is indeed a very fragile thing, it has been rightly said "Trust is like paper, once it's crumpled it can't be perfect again." It is the first and the most important step in building a healthy relationship. Trust is when you can completely rely on another person without any fear of it affecting you in any way. One may try hard to build trust but it comes naturally with time and patience. It is indeed necessary not to trust anyone blindly, because if it gets broken in the end it becomes a problem for you.
In the beginning one must trust a person only with the things that can't be used against them. Because when a broken trust leads to a broken heart, it takes as much time to heal as it took to build that trust, and hence it becomes quite difficult for a person to put their trust in anyone else, they start thinking the same of everyone. So before you trust any human, first you must put your trust in God. Because He will help you out of any situation you go through. Trust Him that whatever happens He has something in it for you. Because in the end the one who gives us strength is our God. Then you must trust His beings, because even if they do break your trust, you know who's gonna help you out of it. And it isn't just about somebody keeping your trust, even you shouldn't betray anybody else's. When you demand somebody to keep your trust, they expect the same in return. Trust is both ways, if someone has trusted you, in return you need to trust them too. Be it family or friendship, any relationship is build on trust. No relationship can find meaning if there is no trust in it.
It is true what they say that it takes years to build trust but seconds to destroy, one wrong move and it can be finished. It needs protection, it needs to be dealt with care. No matter what the cost, never break anyone's trust. Every scar has a cure but trust is like a glass, once broken it can't be the same again. It might take a very long time for it to rebuild and sometimes it never does. And in life a person always needs someone in whom they can put their trust and share all that they want to. It's when the other person knows both your strength and weakness but they never use your weaknesses against you, they rather help you overcome them.
Before you trust anybody else, trust yourself, trust your Lord so that when someone else breaks your trust, you have the strength to deal with it. But never be too afraid to trust anyone, trust them to a limit then only will you be trusted. Trust holds people together. Trust is the reason that a person can completely rely on another regarding anything. It gives you someone to go back to through your thick and thin.