前男友的英文：
ex-boyfriend

This is the trouble with a boyfriend.
这就是有男朋友的麻烦。

The girls exchanged confidences about their boyfriends.
女孩们互诉有关她们男朋友的秘密。

I have parted company with my boyfriend.
我和男友分手了。

She made a vigorous speech in defence of her boyfriend.
她为她的男朋友做了有力的辩护。

The girl pinked at the mention of her boyfriend's name.
那姑娘听到别人提起她男朋友的名字时脸都红了。