Paulo Coelho said this quote

At some point, we have each said through our tears, I'm suffering for a love that's not worth it. We suffer because we feel we are giving more than we receive. We suffer because we feel we are giving more than we receive. We suffer because our love is going unrecognized. We suffer because we are unable to impose our own rules.But ultimately there is no good reason for our suffering, for in every love lies the seed of our growth.