Gratitude Is So Close to Hate

Hazel Barnes: Sartre clearly understands how to write a book. I demand that the other love me and I do everything possible to realize my project. But if the other loves me, he radically deceives me by his very love. He who has one spend for others is contaminated in his being for the rest of his days even if the other should be entirely suppressed. This, like, you have to crush the other. It's hard to make sense of just those lines.