十年前陪你穿校服十年后伴你穿婚纱
[shí nián qián péi nĭ chuān xiào fú shí nián hòu bàn nĭ chuān hūn shā]
An endearing way to describe a long-term and growing companionship. It suggests a person will stay together with their lover from young (school days when both were wearing school uniforms) through till older age where they are married and wear wedding dresses.