在怎么样的情况下两个相爱的人会形同陌吗？

一点小错却都不肯低头。
彼此相爱又都在意过去。

误会

详细的我得写小说了

你做了对不起他的事没告诉他但被他发现了/你欺骗他
简单的 对你没感情（觉）了

最先想起的是一首诗：《最遥远的距离》

世界上最遥远的距离

The furthest distance in the world
世界上最遥远的距离
Is not between life and death
不是生与死
But when I stand in front of you
而是 我就站在你面前
Yet you don't know that I love you
你却不知道我爱你
The furthest distance in the world
世界上最遥远的距离
Is not when I stand in front of you
不是 我就站在你面前
Yet you can't see my love
你却不知道我爱你
But when undoubtedly knowing the love from both
而是 明明知道彼此相爱
Yet cannot be together
却不能在一起
The furthest distance in the world
世界上最遥远的距离
Is not being apart while being in love
不是 明明知道彼此相爱 却不能在一起
But when painly cannot resist the yearning
而是 明明无法抵挡这股思念
Yet pretending you have never been in my heart
却还得故意装作丝毫没有把你放在心里 The furthest distance in the world
世界上最遥远的距离
Is