On one hand we explain our demands coming from our care for others so much that we hope to receive their goodness to make us happy, because we believe our own happiness comes from their giving to us.
On the other hand, it is not the person who matters, yet our own subjective needs. It is not about them, but only our owns sakes.
Only thinking about the bad never leads to good relationships, because love itself is a reflection of goodness, not badness. Thinking about bad distances ourselves from love; thinking about goodness draws us closer to the beauty of love.