I'm not a very trusting person, by nature. I've been through far too much and have seen MUCH too much, both in my career and personal life, to be naive enough to believe that most people can be trusted. The hard core fact of reality is, unfortunately, quite the opposite.
In my personal life, I trusted my only sister implicitly and she trusted me as well. Sadly, we lost her 9 years ago. No one has taken that Trust Spot in my life.
Of course I trust my husband and my adult children, but that's fairly easy and realistic. Our bond is indestructible.
The thing that is important for people to always keep in mind is.....it is not the person who betrays us, who is at fault.. It is OURSELF, for being frivilous, vocal and self-abusive in our matters of privacy. Self-protection and safety is our own responsibility.
The next time you hear someone say, "I THOUGHT I could TRUST him/her." Tell them nicely that THAT was their first mistake.