我失恋了，用英语怎么说？

口语:
It's over between us. 我们之间已经玩完了。
We broke up. 我们分手了。
I got dumped. 我被甩了。(最惨)
I fell out of love with him/her. 我不再爱他/她。

也可以这样说：

1.to be disappointed in a love affair; to be crossed in love; to wear the willow
2.a failure in love; disappointment in love

cross in love

game over!
Hi,I know love at first sight!