We were just talking about you

We were just talking about you.

a phrase said when a person being discussed appears on the scene. (Compare this with Speak of the devil.) Tom: Speak of the devil, here comes Bill. Mary: We were just talking about you, Bill. Sally (approaching Tom and Bill): Hi, Tom. Hi, Bill. What's new? Bill: Oh, Sally! We were just talking about you.
See also: just, talk, we