Healty communication

You can always maintain a good relationship if you communicate effectively and you can manage discussions the right way. It's an art in itself, and I'm still learning (and re-learning) it.

The most important ingredient for an healty relashionship is communication and to do it the right way I have some tips:

Trust her.
Don't listen too much to your negative emotions: they are the product of an interpretations of the facts based on your beliefs, and they are not always right (in fact, they are usually not based on reality). Trust her, this should be always your first option.

Talk with her.
Don't be shy or let her figure out all by herself, if there is something that bothers you, tell her that. Talk with her in a light and non-judgemental but firm way. Balance trust and a calm mind with assertiveness. Don't fight her but gently and firmly speak your mind.

If you repress your concerns because your fear of lose her, you'll only amplify them, and at the worst time you'll explode and cause a big (and useless) fight.

Or, it can happen as a surprise that you have misunderstanded the situation or that she had very good reasons to do what she done. If you confront her when angry and emotional in this situation, you will appear very insecure and immature.

To speak with her you must be calm. But if you feel too emotional, do yourself a favour: Wait at least a day and in this day write down what you think and analyze it with an empty mind. If necessary, talk about it with some close friend. You will be glad that you did it...

Be willing to forget
When she knows that she has mis-behaved and admitted it, show her some emotional stability: forget and hug her.

You want to earn her respect by having self-respect and standards of behaviour, but you also want to be a source of happiness and positive emotions for her.

Remember the pain principle: everyone seeks the pleasure and runs away from the pain. Administer some tough-love when needed, but keep it in balance with trust and emotional stability.