忘不掉始终是旧情人
[wàng bù diào shĭ zhōng shì jiù qíng rén]
'Wang Bu Xiao Zhong Shen Shi Jiu Qing Ren' means 'Cannot forget, always will remain as former lover'. This indicates unresolved love/infatuation towards a previous relationship/partner. Often associated with lingering attachment despite moving on from them due perhaps unreciprocated affections or broken-heartedness.