A programmer named Dan Loewenherz just released a new, free Facebook app called the Breakup Notifier.

You go to the official website, sign in with your Facebook account  and choose which of your friends you'd like to stalk.  Then, as soon as any of them make a change in their relationship status, you get an email letting you know.

What you do with that information is up to you.

(You can sign up for the Break-up Notifier at breakupnotifier.com.  As for entering your Facebook login info on some random website, it's probably fine…but stalking always comes with some risks, ya know.)