Louis Tomlinson
Flashback from the past: Louis Tomlinson and Zayn Malik share a moment together.Twitter/ Screenshot

After Zayn Malik took the dissing battle to Twitter, it is time for Louis Tomlinson to take it to the next level by writing a song about it.

Hollywood Life has reported that the singers, who were once "brothers", are now currently battling huge ego issues over their careers and it all started when Zayn decided to exit One Direction, leaving his brothers stranded in the middle of nowhere.

And like most singers, Louis is venting out his emotions through his songs. Hollywood Life reported that since Louis sometimes writes some of the band's songs, his anger about Zayn leaving the band is definitely going to out somehow.

"Louis has taken [Zayn's departure] to heart, he feels very betrayed by Zayn, they all do," a source told the website. "Louis helps write a lot of their songs so these feelings will end up in their music. Louis will write a diss son. He's angry and he can't hold it in."

In addition to that, Zayn threw away all the years of their friendship to take the side of his new friend Naughty Boy and hence, it is only natural for the One Directioner to spill his hatred towards his former band member.

Not only Louis, even the other band members were upset with Zayn's departure, describing it as the "most selfish move" by the singer. The band incurres a huge loss and sources said that they had all wanted to quit but stuck together for each other.

The open Twitter war between the two singers started when, on 6 May, Naughty Boy posted a picture of Zayn to which Louis commented, "Remember when you were 12 and you used to think those Mac filters for your pictures were cool haha ! Some people still do HA!" After all, they both grew up together and now that Zayn has left the band, he is fondly remembering their past.

But Zayn took it to another level when he took his rapper friends' side and told Louis to mind his own business. "@Louis_Tomlinson remember when you had a life and stopped making bitchy comments about mine?"