And in a recent survey by the app Wishbone, the exact same portion of users — 44 percent — said they had or would get back with an ex.(Eighty percent of Wishbone's users are under 18 and 20 percent are 18 to 24, according to a rep.) If you've ever gone through a bad breakup, there's a chance that one special person keeps tugging at your heartstrings. There's no hard and fast rule about whether dating an ex is a bad idea — sometimes, the second (or third, or fourth) attempt at a relationship works, while other times, it explodes and leaves you more hurt than ever. Your brain continues to grow and develop up until you turn 25. Since you might not have fully thought through the breakup, you might end up regretting your decision later, after you've had time to cool off. More than half of yo-yo daters continue getting physical with their ex, found a 2012 study from the University of Wisconsin, Milwaukee and Bowling Green State University.

Rather, a recession is a significant decline in economic activity spread across the economy, lasting more than a few months, normally visible in real GDP, real income, employment, industrial production, and wholesale-retail sales.

For more information, see the latest announcement from the NBER's Business Cycle Dating Committee, dated 9/20/10.

"If we don't delete them, they can be a constant reminder," she says.

"Seeing a photo of them or hearing their voice in a video can trigger a little release of oxytocin, the attachment hormone." That burst of oxytocin, makes it much harder to let go of your ex.

Before we jump straight into the 7 situations, I’ll give you my step-by-step method for picking up girls.

It’s so simple you can start putting it into action immediately.

You might assume that dwelling on a past relationship isn't healthy, but a 2015 study from Northwestern University found that reflecting on a breakup can actually help you develop a stronger sense of who you are as a single person and help you feel less lonely.

So if you're tempted to get back together with your ex even though you know it's not a good idea, this trick could help your brain and your heart get on the same page.

However, that being said, it’s not as simple as “winking” at someone you’re attracted to, or sending a friendly invite for drinks.

If you want to learn how to pick up girls, you’ve just hit the jackpot.

Luckily, you might find yourselves back together again, like when you're both home again from school for the summer or back from study abroad.