我怕黑你是光你怕黑给你光
[wŏ pà hēi nĭ shì guāng nĭ pà hēi jĭ nĭ guāng]
Translating roughly into: 'I am afraid of darkness and you are light; you fear the dark then I'll give you light'. A romantic notion that the other can be comforting to each other when facing difficulties or insecurities.