To remove a friend. Visit the friends sheet, and click the little “x” to the right of their name.
This action will:
Remove that friend from receiving any of your Lockets
Remove any past conversation history between you and that friend
Remove all of their Lockets from your history
If you would like to re-add that friend, you can search their name and click “+Add”
This action will bring back any past photos your friend has shared with you, and this will make any photos you sent to them visible again in their history.