Compassion is the capacity to understand the suffering in oneself and in the other person.If you understand your own suffering, you can help him/her to understand his/her suffering. Understanding suffering brings compassion and relief. You can transform your own suffering and help transform of the other person with the practice of mindfulness and looking deeply.
The capacity to offer joy. When you know how to generate joy, it nourishes you and nourish the other person. Your presence is an offering, like fresh air. or spring flowers, or the bright blue sky.
Equanimity, inclusiveness, and nondiscrimination. In a deep relationship, there's no longer a boundary between you and the other person.You are her/him and she/he is you. Your suffering is her/his suffering. Your understanding of your own suffering helps your loved one to suffer less. Suffering and happiness are no longer individual matters. What happens to you happens to your loved one.