Add friend of friends as your friends
It is possible that we may have common friends between multiple people who have not yet been added in our friend. It'll be easier to add a friend from our friend's friend list
This in an interesting idea, and one I could see being helpful when trying to add friends on the fly.
Vijeth Krishna commented
there are occasions where we hang out with friends of friends. So it would be great to have the ability to add transactions under their names using auto-suggestion (Without the need to add them as friends) upon the condition that a mutual friend has added them and myself in a transaction previously.