Looks like it's round two between Louis Tomlinson and Naughty Boy, but this time Zayn Malik is getting involved.

So here's what went down.

On Wednesday (May 6), Naughty Boy, who is working with the former One Direction member on new music, posted this pic of the two of them.

A few hours later, Louis, presumably, made a comment about the photo's filter.

Well that was enough to set Zayn off because he replied directly to his former bandmate basically telling him to mind his own business.

Oh wait, it doesn't end there. Naughty Boy decided to get in on the on the Twitter fight, firing back at Louis saying that he "can't even sing."

He did not just go there. Louis, who called Naughty Boy "inconsiderate" after the producer retweeted a video that mashed up “Zayn Malik” and “Naughty” to create the moniker “Zaughty,” came back with a dig of his own, asking him how it feels to "be riding on the back of someone else's career?"

This is getting so ugly.

Louis, who has gotten major support from the Directioners since they trended #TOMLINSONSLAYSAGAIN on Twitter, then sounded off one more time, seemingly having the last word...for now.