Look for actions matching words.
Look for your boundaries being respected without punishment.
Look for whether you can express discomfort without the entire relationship becoming unstable.
Look for repair after conflict.
Look for reciprocity.
Look for whether you can remain yourself.
Look for how your body feels after repeated interactions, not only during exciting moments.
Look for patterns over promises.
This is especially important if you have a history of falling for potential, because Why You Keep Confusing Potential with Compatibility explores exactly why imagining who somebody could become is not the same as evaluating what they consistently bring into your life.
Trust is not closing your eyes.
Trust is seeing clearly and allowing reliable evidence to matter.
What to do when you catch yourself waiting for the other shoe to drop
First, identify what is actually happening.
Not what could happen.
Not what happened five years ago.
Not what happened to your friend.
Not what one terrifying article on the internet says might happen.
What is happening now?
Write it down if you need to.
“My relationship is currently stable.”
“My job is currently secure.”
“My family is okay today.”
“I currently have enough.”
“I am safe in this moment.”
The word currently is useful because it does not demand that you lie to yourself about permanence.
It brings you back to reality.
Next, ask whether your fear contains information or prediction.
Information sounds like, “They have broken three promises this month and their behavior has changed.”
Prediction sounds like, “Everything is good, therefore something bad must happen soon.”
Those are not the same thing.
Then ask what you would do differently today if you trusted yourself to handle tomorrow.
Would you enjoy dinner?
Would you stop checking your phone?
Would you celebrate the achievement?