how to see my relationship history on facebook?

[PEYMAN]

Last week I've changed my relationship status privacy from custom to public and I've double checked it by logging out and then logging in to my account and the status was visible to public,today my girlfriend checked my account and it was set on custom again and she thinks that I've lied to her.How can I see the log of changes about my relationship status and it doesn't appear in activity log of course.

[Andrew]

Facebook friend history is not available. Only current list of friends is, and there is no date available as to when they became freinds. You can get a lot of information about friends by asking for extended permissions such as friends_likes, friends_interests, etc.