Maybe I'm being dense, maybe I just see human relationships differently. But I don't see how trust and being hurt by someone are that dependent on one another. Intentional hurts do relate to trust, from a friend not showing up for a coffee date to someone lying about something important, infidelity. But I don't know that it's realistic to "trust" that someone will not hurt you unintentionally, saying something that is hurtful even if they think there is some risk you might take it badly.

I think when people have a stronger core, they can take the slings and arrows of intimacy with others without it feeling like a wound, and that is where the issue of caring less about what others think may reside. I think if your definition of trust means that someone will never hurt you, that strikes me as unrealistic and bound for trouble.