When someone doesn't trigger your attachment system, you'll feel calmer and more present when you're apart from the relationship.
There's not much tension
Healthy relationships promote a natural, easy, and peaceful environment, calming the nervous system and preventing individuals from feeling on edge.
They're open, not defensive
Sharing your opinions, dreams, and fears, and calling out vulnerable aspects, can help others hear your perspective and not dismiss, devalue, or defend it.
They apologize
If you express discomfort or hurt early, they will offer a genuine apology. If they never apologize, run away.
They don't take it personally when you're busy
When making plans with someone with a busy schedule, they may not take it personally if they realize you have other important life matters to attend to.