Zeus and Eros

And Zeus said to Eros: "For every love will there be hatred. For every meeting of lovers will there be a separation. For every union will a seed of discontent be sown. Love there will be, but not in two, but in three, so that a failure is born out of every success, and the balance remains."

[P.S. The dialogue is fictitious and i made it up. It is not a part of Greek mythology.]