Two things...
The first is that, "if you love me you'll trust me" is at the top of the Manipulative Toolbox. The moment you hear it alarm bells should go off because it's a certain sign somebody is taking advantage of you. There is no question of this.
Trust me.
Just kidding.
Trustworthy people don't have to ask for trust.
The second thing? Trust, but verify. However, if somebody has already proven themselves not to be trustworthy, don't trust, and verify.
Take what you want and leave the rest.
Cyranaok
P.s. How do you get trust back and will you ever trust again? That, unfortunately, I've got nothing for. Let me know if you find the answer.