the classic way to speak about ones we know (friends) who are not witnesses is to say "an aquaintance I know" rather than "a good friend of mine"
When I was in my early twens I had an assignment at the meeting. As a setting i had put that i was witnessing to a schoolfriend
Later on i was counscelled from the platform on how others from school are not supposed to be our "friends"
This cult is just awful