True enough. Trust grows from within us. Once we saw the goodness ,the nurturing care and the loving character of a person, we tend to give away our trust. It doesn't come along in an instant. It takes years to develop so; if someone trust us, we wanted to keep it that way.
Life is not all the time pleasant. Like you, I have friends who deceived me too and as the saying goes, it only takes a second to break that trust! It takes forever to repair and for me, once that bond of trust broke, there is no way that it will going to mend.