我们碰巧发现我们有个共同的朋友。

We happened to discover we had a friend in common.

《柯林斯英汉双解大词典》

然而我发现他的前女友和我们共同的朋友一起组织事情，可是却没有人告诉我。

Then I found out the ex was organizing things with our common friends and no one was telling me.

youdao

我们之间有很多的共同点，而且，我最后发现我与我的男朋友并没有这些共同点。

We had lots in common, and eventually I realised I didn't have that with men.

youdao