⠀ Lack of attachment is humility. This is an understanding of our insignificance on the scale of the universe and the limitations of our control. It also means that you are light on love. Instead of falling in love with your expectation or image, you will fall in love with the person as a person who goes their own way in the universe. Instead of wanting your partner (and relationship) to stay the same all the time, you show enough love and give them the freedom to choose. A loving person accepts a partner completely - as he is at every moment of his existence, even when he is changing right before our eyes.
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⠀⠀ People, like everything else in this life, will always experience change. Appreciate them for this, as it allows you to realize that nothing in the world will last forever.