I'm curious if it's possible to get the "friendship" information via the Facebook PHP API, meaning information about the friendship the logged in user and one of his friends share?
Information that is visible on this page:
https://www.facebook.com/profile.php?id=[YOUR ID]&and=[YOUR FRIENDS' ID]
Via the Graph API you can query the
/me object. Two properties you will want
significant_other. I don't see where it specifies the "how long" part. Not from the Graph API nor from FQL.
me/family in the graph.