Answer:
The answer is intimacy.
Step-by-step explanation:
Intimacy refers to understanding a partner in a way that allows them to share emotions and demonstrate their affection.
Intimacy might show both in verbal communication (e.g. sharing secrets) or non-verbal (e.g. cuddling and other manifestations of physical intimacy).
Arguably, intimacy mainly relies on trust, and it depends on different factors such as cultural conventions.