Planned or unplanned, running into an ex can be more than a little awkward. Luckily, we're breaking down some key dos and don'ts to help you navigate the tricky interaction. With the help of hilarious pop-culture GIFs from Girls, Saved by the Bell, Full House, and more, we're sharing some smart (and sarcastic) hints for your next run-in with the ex. Nervous you'll see an ex-boyfriend at an upcoming event? Prepare with these witty tips!