But as long ago as that was, it seems like Arzaylea isn't moving on anytime soon.
But thanks to Arzaylea, fans have now heard a snippet of another song that has yet to be released.
Posting a short clip to her Instagram story, you can hear a BOP that definitely sounds like our 5SOS boys. "Full moon emotions," she wrote over the top.
Obviously it's not confirmed that this is their new music at all, but it comes after Arzay uploaded lyrics to "Want You Back" before it was released.
None of the guys have made any comments about this alleged leak, however Michael Clifford's girlfriend Crystal Leigh has posted some very savage tweets that seem to be pointed at Arzaylea.