Trust?

I always wonder how much of one person can we trust? Can we trust someone whole heartedly and unquestioning? Does it take time for us to build trust? Can we just accept one word of, "No, darling, I won't do it"? Can we really ever achieve that level of trust between 2 people? If not, for every posted message in this day and time of Facebook, will evoke a sense of distrust. And if this goes on for a long time, this distrust will rear its ugly beastly head and sets a claw on you. It will continue to bite you and eat you till you are gone, digested by this beast and you are sucked into oblivion, leaving only remnants of what was once good till this beast arrives.