Effective very soon, all relationship proposals and friend requests over 30 days old are going to be purged.
There will be no magic button to accept all requests because it would simply defeat the purpose of having a badge for having X friends. Badges are earned not handed out, and having an accept all would just make it too easy.
This is mainly an effort to clean up the data for users that haven’t logged on for a good long while (and possibly won’t ever be back) and help us to ensure you the best experience possible.
Inbox messages will eventually be going the same route but functionality to allow you to “favorite” a message will be put in place a week or so ahead of time. Expect a sent box around the same time.
Sorry for the inconvenience. The new request system should make it pretty easy to accept those requests quickly.