I agree with Igor Frankensteen. Trust is an expectation of consistency.

Statements about trust should also be weighed through the lens of the scammer. More than once I've scambaited scammers through various sites. When they hit me up for money and I refuse, they accuse me of not "trusting" them. I explain to them that they haven't earned my trust, their expressions of affection notwithstanding, and until they earn that trust, I won't give them any financial support.

Igor's explanation gives me an even better come back, by hitting me up for money, they've violated a trust that I had in them. I trusted them to be looking for a match, and self-sufficient. They asked me for money and broke that trust by claiming poverty and raising scammer red flags.

A relationship demands trust, but trust isn't given blithely, it is earned by a pattern of consistency that in turn gives us an expectation of consistency.