怕你抬头看不见我怕你回头找不到我
[pà nĭ tái tóu kàn bù jiàn wŏ pà nĭ huí tóu zhăo bù dào wŏ]
Meaning 'Afraid that you wouldn’t see me if you looked up; afraid that you wouldn’t find me if you turned around', suggesting deep concern or fear of losing connection with another individual—this can apply to relationships where assurance or reassurance of presence is necessary for either party involved.