in company with

strokes 11
strokes after radical 9
白头偕老 白頭偕老 bai2 tou2 xie2 lao3
(to live together until the) white hairs of old age (idiom); to live to a ripe old age in conjugal bliss; until death do us part

相偕 相偕 xiang1 xie2
together (literary)

偕老 偕老 xie2 lao3
to grow old together

偕同 偕同 xie2 tong2
along with; accompanied by; together with