It is totally on between One Direction and The Wanted.
Over the weekend, Max George (who shot down a certain redheaded trainwreck the night of the most recent Lindsay Lohan arrest) simply Tweeted: "Psy and me getting messy #geekandproud."
Zayn Malik then responded that "the first step is totally acceptance. #geekoftheweek. You display just how much of a wannabe you are."
And, from there - as one of our favorite Anchorman quotes would say - things escalated quickly...
"That's not very nice, @ZaynMalik. I was just starting to like you and your RnB songs, too," George wrote, backed up by Tom Parker of The Wanted, who chimed in with:
"Zayn Malik had his '1 Stripes' knickers in a twist, bro."