tell somebody about 对某人说起某事

Tell me about your new girlfriend. 跟我说说你的新女朋友。

I didn't tell him about you. 我还没有告诉他你的事呢。

What did Mike tell you about her? 麦克是怎么对你说她的?

Tell me about you and Jake. 告诉我你和杰克的事情。

It's a long story. 说来话长。