勇敢就是没有你我也开心
[yŏng găn jiù shì méi yŏu nĭ wŏ yĕ kāi xīn]
Bravery means that even without you I'm happy conveys that courage comes from self-assurance rather than relying upon another for happiness. A display of independence indicating bravery as a quality not needing outside validation to thrive.