See Your Facebook Relationship History on One Page
Have you ever wanted to see all the Facebook posts that you and your significant other have been tagged or shared? There is a hidden url for this.
Go to https://www.facebook.com/us and the page will list all posts that have mentioned you and your partner, including posts where others have tagged you both.
When you visit the page, it switches to something like facebook.com/friendship/ [ yourfacebookID visible / [ partnerfacebookID ]), so if you want to see the relationship history with another person on Facebook, change the last part of the URL to Facebook ID another person.
This tip comes to us through BetaNews, which features other Facebook tricks you may not have known about.
10 Hidden Facebook Features You Should Know About | BetaNews