I want to break up.
我要分手。
It's over.
我们缘分已尽。
Don't call me anymore.
别再打电话给我。
There's someone else.
我有了别人。
We're not meant for each other.
我们命中注定不适合。
旁敲侧击说分手
I need some time alone.
我需要一个人过一阵子。
We're better off as friends.
我们做朋友比较好。
You're too good for me.
我配不上你。
You deserve a better man/woman.
你应该找个更好的对象。
来源:旺旺英语学习网