A new app for Facebook lets users pick friends whose relationship status they’d like to monitor. If one of those relationships changes, the user gets notified by e-mail. The Facebook Breakup Notifier states:

“You like someone. They’re in a relationship. Be the first to know when they’re out of it.” So, if that old high school flame suddenly becomes “single” or the girl you’ve pined for decides that her relationship is now “complicated,” you can swoop right in. Theoretically, the app could be used by friends who just want to keep up with the love lives of their buddies.