求翻译：（3） 一对在一起很久的恋人因为某事，或对于对方长期处于一个不满的状态，终因某事爆发，也许对方的一句话或一个行为在那一刻让他下定决心分手。是什么意思？

(3) a pair of lovers together for a long time for something, or for other long-term in a State of dissatisfaction, the end result of outbreak of something, maybe the other side of a word or action broke up at that moment he made up his mind.