十六携他手六十伴她老
[shí liù xié tā shŏu liù shí bàn tā lăo]
'Hold hands at 16, age alongside till sixty.' - conveys lifelong companionship, emphasizing unwavering dedication and fidelity to a relationship that started young and is meant to grow old together. Such a commitment to partnership highlights love's timelessness and depth, showing an intimate connection built upon shared experiences throughout all stages of life.