In any relationship, the essence of trust is not in its bind, but in the strength of its bond.
The base premise of every relation is trust. Its easy to begin with trust but maintaining it at the same wavelength calls in for a lot of understanding, daunting unwavering will, continual transparency and unconditional belief. When someone with whom you connect and forge a relation gives you his/her trust, and you accept it, then it is your sacred duty to preserve the sanctity of the relation by not breaking the trust. Again, trust is not a single lane; its a highway and needs to be felt and maintained either side.
Be wary of whom you choose. Its a melee of people out there and not everyone are genuine. Sift the real from the fraudulent. Some fake people get into a relation and win your trust not because they are fond of you or value you; its just that they are curious to know more about you. Steer clear from such deceitful two-faced people. Its not the worth your time efforts and emotions. When you feel, you've found the right person, don't spill all your beans instantly. Take baby steps; get to know the person better and then only start sharing. After all, you do not want to go through the surge of emotions and heart break that will bring your life to a temporary halt when you realize you counted on an unworthy person and your confession backfired and misused. Time takes a long time to heal and get you to a state where you can move on; so do consider all the factors before you plunge in.
As an end note, all I can say is follow your heart, but be quiet for a while first. Ask questions, then feel and weigh the answer. Learn to trust your heart while you keep your head on your shoulders. Strike a balance between both before you commit.
Remember always, "Trust takes years to build, seconds to break, and forever to repair."