Less than a week after 22-year-old Zayn Malik quit One Direction, he released his first solo song, "I Won't Mind," which just seemed like salt in the wound to many One Directioners—and even One Direction themselves.

One Direction member Louis Tomlinson angrily tweeted at UK producer Naughty Boy, who worked with Malik on the record, "Wow @NaughtyBoyMusic you're so inconsiderate pal, seriously how fucking old are you? Grow up! #masterofallwisdom." Tomlinson was allegedly upset that Naughty Boy seemed to be boasting of his work with Malik so soon after One Direction reduced to a four-piece.

Today, Naughty Boy tweeted an image of him and Malik together again with the baiting caption: "Replace this."

Prompting a response from Tomlinson:

And the response to the response from Malik and Naughty Boy:

Cringe. Public Twitter spats, not a good look for anyone involved.