Months ago I customized my privacy settings so that some of my Facebook friends wouldn't be able to see my future posts. Yet, one friend I specifically put under "don't share this with" category liked the picture I posted yesterday. How is it possible? First off, we have no friends in common. The picture was on my timeline and it was not shared by anyone.
1 Answer
Apart from what's already mentioned in the comments, it is possible that you have a friend tagged in the photo and he saw it because the photo appeared on the friend's timeline.