"To trust a friend" means to have confidence in someone and believe that they will do what is right, keep your secrets, and be loyal to you. Full definition
Her disabilities and issues with anxiety led to difficult times filled with struggle and adversity, but it didn't stop her from building strong relationships with trusting friends along the way. (animalleague.org)
The most reliable way to find a good puppy is through the advice of trusted friends who own dogs that you admire. (2ndchance.info)
They also ask trusted friends and advisors (including legal recruiters) about the reputation of the firm and the likelihood that it will deliver on the career opportunities promised. (slaw.ca)