Off topic...but I like that he knows he is INFJ. Of course if he is some sort of employment officer this makes sense...but the 2 INFJ males in my life were like INFJ WTF? I suspected with both. One...I work with & we just happened to have a workshop involving 'Type'...and the other I had to beg (& I mean beg) to take the full-length MB.
I just think it is helpful to have this kind of knowledge (obviously as I'm part of this site).
If you are able to come back & answer...how did it come up in conversation. Was he just like..."I'm INFJ"...?