“… the second time I ever saw you I learned what I had read in books but I had never actually believed: that love and suffering are the same thing and that the sum of love is what you have to pay for it and any time you get it cheap you have cheated yourself.”

Source: Tarzan of the Apes

Source: Lady Windermere's Fan

Variant: And now I'm looking at you, he said, and you're asking me if I still want you, as if I could stop loving you. As if I would want to give up the thing that makes me stronger than anything ever has.
Source: City of Glass

Source: Looking for Alibrandi

Source: Hello, Mallory

Source: The Storied Life of A.J. Fikry

Source: First Light

Love is not a feeling ~ The Article (1995)
Context: In other words, to be enlightened of the acquired burden every spiritual belief and notion has to be abandoned, every reference to what any spiritual teacher or master has ever said must be set aside. What does that leave? Your own experience. Not your historical or memorable experience, for that's the problem. Your own experience is your self-knowledge of life. Let's establish once and for all what this means now. Forget everything I've said in this article except this question: Do I want to suffer or not suffer NOW? That's the only truth for you. There's no tradition, no past, no discussion in it. It's all you need. Keep it with you and at the next temptation to suffer it will prevent you suffering. But only if you've learned in your own experience what causes you to suffer. If you haven't learned that, you're still attached to suffering and will unwittingly embrace it. In that case you have to read on, take more time and ask yourself more questions.