Assuming your phone automatically updates your apps, millennial friendship dynamics shifted on Monday while you were Facebooking. That is, Snapchat released a new version - one which allows users to identify their mutual besties, six degrees of separation, and who is the Judas of your best friends (who you snap all the time and they don't reciprocate).

In case you don't use Snapchat, it's an app that allows friends to send self-deleting photos and messages to one another. Snapchat used to be just in good fun (and maybe sexting) before they allowed friends to see who their friends' top Snappers were. You could click on a person's name and see the top three people who they snapped with.

No big deal, right?