Thich Nhat Hanh (October 11, 1926 -)
In a deep relationship, there’s no longer a boundary between you and the other person. You are her and she is you. Your suffering is her 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 your loved one happens to you. What happens to you happens to your loved one.
…In true love, there’s no more separation or discrimination. His happiness is your happiness. Your suffering is his suffering. You can no longer say, “That’s your problem.”