Perhaps because he was the only man who'd ever earned her trust.
And the only way I could earn your trust was under another name.
And yet he had earned her trust, even in a matter of days.
He earned the trust of everyone, from the top down to the players.
It'll take me some time to earn her trust again.
But I think that's a situation where you have to earn the man's trust.
"I will do everything possible to earn the trust of the club."
It wasn't until later that she had earned my trust.
"You don't know how much it means to me to have earned your trust."
It takes much for anyone to become friends with him, and earning his trust is hard.