Indeed, trust is the main component of harmonious relations, but where to get this very component? How to learn to trust each other?
It is difficult to derive any general rules for all situations at once, because in each pair everything is very individual, and, as we have shown, completely different things can affect the degree of trust.

To begin with, you can try to analyze and understand what exactly prevents you from fully trusting your partner. Is there really a real reason for this, or are your suspicions more related to some past negative experience?

Yes, of course, sometimes suspicions are justified, but this is not a reason for prevention to suspect everyone and everything. To trust means to risk opening up yourself, to become more defenseless, and, perhaps, this is the only way to achieve true intimacy.

The degree of mutual understanding is largely influenced by how well you understand each other's emotions. After all, the same behavior can be interpreted in completely different ways, so sometimes you need to pronounce your emotions and gently ask your partner to do the same.

For example, if you are asked “Are you in a bad mood? Something happened”, the worst answer is “Yes, everything is fine”. If you are worried about trouble at work, then talk about it (without going into details), do not keep it to yourself, making your partner think that it is he who is to blame for your bad mood.

Of course, it often happens that it is the man who brushes off the phrase “Yes, everything is fine,” and in such a situation there is no need to press. All that can be done is to show that you are ready to listen and accept him at any moment without judging him.