Why do I get repeated facebook friend requests from a person I already have as a friend on facebook?

[Style]

I keep getting friend request notifications off 1 of my female friends that I already have as a friend on facebook. Yet when I go on her profile to see if its a new profile, it says I'm already friends with her. I just got the 3rd request today, just like it would show as to confirm a new profile.
Didn't cancel friend or block her.

Friend request was accepted 2 months ago, but starting 2 weeks ago I received a friend request from her profile, yet we are already friends.

I accepted all friend requests I got off her profile and the latest request said "friend request cancelled" when I clicked 'confirm'.
It's not a fake profile, its her profile and she doesn't delete me because before I accept the friend request I check to see if we are still "friends" on facebook. To which we are.

Also I am thinking that you can send multiple friend requests to a person you're already friends with so maybe it' just facebook messing around. - not sure how to stop it though?

Anyone have any ideas why this is happening?

[Chris]

System error?

Don't worry, it's not important.

[Md. Kamruzzaman]

conform it