不适合你何必勉强在一起
[bù shì hé nĭ hé bì miăn qiáng zài yī qĭ]
'If we don't suit each other, there is no need to force ourselves to stay together.' This phrase indicates resignation regarding an unsuitable relationship. Rather than forcing two people who are incompatible to stick it out through difficult times, it may be more advisable to recognize differences and peacefully let go.