Asking if something 'works' or is effective may not be the best way to make use of a new idea or innovation. 'Try it and see' is better advice.
You can trust it, selectively. But like any friendship it needs to be nurtured and cared for.
Feelings and impressions are powerful drivers in relationships. Their impact can be creative, or destructive. Usually, we only start to think about things like trust and respect when they are lost or threatened. That's a bit late, but it's never too late.
Having a difficult conversation may be scary, but it is the route to happy resolution rather than angry conflict.
Sleeping dogs don't always lie, sometimes they tell the truth. And people can be tricked by their imagination into thinking that someone else is deceiving them. The way round this is to stand back and ask a simple question.