1.
Let's break up.
咱们分手吧。
I want to break up.
我想分手。
I really think we should break up.
我真的觉得我们该分手了。
2.
Let's just be friends.
我们就做朋友吧。
We're better off as friends.
我们做朋友比较好。
3.
We broke up last summer.
我们去年夏天分手了。
We're not meant for each other.
我们命中注定不合适。
4.
I've fallen in love with someone else.
我爱上别人了。
It's over between us. I don't love you anymore.
我们缘分已尽，我不再爱你了。
I don't love you anymore. We should break up.
我已经不爱你了。我们分手吧。
I don't think we can do this for much longer. We should break up.
我觉得我们不能维持更长时间，我们分手吧。
5.
We've been fighting a lot recently.
我们最近总是吵架。
We keep fighting and I don't like it.
我们老是吵架，我不喜欢这样。