Young people singers Justin Bieber and Selena Gomez have been broken up since 2011 (and allegedly on and off after that), but given their recent drama, you’d think they’d just broken up. The two exes are doing the absolute most, duking it out with one another on social media for the entire world to see. 

Here’s the short version.

It all started when Bieber, 22, recently posted on his Instagram page that he was going to put his page on “private” because his fans, known as “Beliebers,” were dragging his new 17-year-old “friend” Sofia Richie — daughter of Lionel Richie and sister of Nicole Richie. 

“If you guys are really fans you wouldn't be so mean to people that I like,” he wrote.

Then, Gomez, 24, left some unsolicited advice for her former bae. 

“If you can't handle the hate, then stop posting pictures of your girlfriend lol- It should be special between you two only,” she wrote, commenting on a photo of the rumored couple. “Don't be mad at your fans. They love you and supported you before any one ever did.”

Then it spiraled downhill from there, with Bieber indirectly accusing her of using him for “fame” (despite her having her own career from jump) and cheating on him with former One Direction bandmate Zayn Malik. And Gomez followed up by subsequently trolling him with a series of pics of her loving her fans — every single one of them — and letting him know that if she and Malik were ever a thing, folks would have seen them out, EOnline noted. 

And while this pettiness is entertaining, it also serves as a cautionary tale of how not to interact with an ex (and how to behave after a breakup):

1.)  Stop Instigating: No shade to Gomez, but even if she was saying what everyone else was thinking, she didn’t need to stir the pot by injecting herself into this conversation. Even if your ex is wrong, sometimes the best thing to do is just let sleeping dogs lie and avoid the drama all together, especially when you are the most followed person on Instagram.

2.)  Stop Airing Out Your Business — Past and Present: The world doesn’t need to know who cheated, who was selfish or who was DM’ing folks on the side. You don’t need to win in the court of public opinion when it comes to your relationships. So stop trying your case for everyone — this is what therapy is for. 

3.)  Stop Following Each Other on Social Media: Whether your breakup was amicable or tumultuous, when a relationship is over, give yourself physical and virtual space. Seriously, "out of sight, out of mind" works wonders for your mental health and Twitter fingers. So go ahead and use that “unfollow” or “unfriend” button, you’ll feel so much better.

Whatever the case, never lose sight that “the best revenge is your paper” and also that you’re an adult. Act accordingly.