"How you gon' trust somebody when you don't trust yourself?"
CG’s girl is trying to get him to trust himself, realizing that this is the first step in trusting her.
This is very similar to the question that Kendrick asks himself on “Real”. If you can’t love/trust yourself (if you aren’t sure of your own identity) you’ll never be able to love/trust someone else
In the Because The Internet Screenplay, The Boy reveals that the only person he trust is Naomi(Jhene Aiko). Naomi tells him that he shouldn’t.
This could also be a reference to Jhene because she drops this similar trust line On Drake’s From Time about trust:
This may reveal that Jhene’s hook on Drake’s track is aimed at Donald?
Gambino speaks about not trusting himself in this interview:
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