Qíngrénjié nà tiān, dānshēn de wǒ zhǐnéng kàn zhe biéren xiù ēn'ài.
On Valentine's Day, single me could only watch other people show off their love.
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culture
秀 is the English "show" borrowed as a verb, as in 作秀 "to put on a show". Singles forced to watch couples 秀恩爱 joke that they are being fed 狗粮 "dog food": the couple 撒狗粮 "scatters dog food" and the single 吃狗粮 "eats it".