Social Media
Depending on how close you were and how bad the breakup was, you may or may not have chosen to remain "friends" on social media. I mean, we're all adults here, there's no need to start getting trigger happy with the block button. But it's only fair to be mindful when posting things online, especially if you were the heartbreaker. Slipped into a new relationship just days after ending a longterm romance? Perhaps wait a while before changing your profile pic to you and your new boo - save your last love some embarrassment.
[Photo via @oliviapalermo]