All thanks to Selena Gomez, former friends, Justin and Taylor are new feuding over who has the say in Gomez's life. After getting dissed by Justin Bieber in his latest song "All Bad," Taylor Swift is ready to get even with her upcoming song. So what's Swift's song going to be about?

Taylor Swift has allegedly gotten in between Selena Gomez and Justin Bieber ever since the "Jelena" duo split up. Obviously, Swift is no "Belieber" and has constantly dissed Justin for his antics. According to sources, Swift continuously reprimanded Gomez for keeping the lines of communication opened between them.

Well, it looks as if Justin Bieber has had enough of Swift. In a latest release of "Music Mondays," Bieber released the song "All Bad" which is said to be a song for Taylor Swift. The lyrics are as follows:

It's another, if it ain't one thing
Instigators, like pouring fire on propane
The wrong thing, they be worried about
Ooh, you know females
And how they like to run their mouths

Wanna be, wanna be, just like, talk like, you
(like you) you (like you)
Misery, misery, best company
Don't let them change your mood

They try to get at me (They try to get at me)
Behind your back (your back, your back)
Tryin' to tell me that I'm just like the others
But I ain't all bad

Wanna be, wanna be everything I ought to be to you (to you)
Envy, envy, same thing as jealousy
Jealous of you
That's what they do

After hearing the song, Swift has gone mental and is now ready to make a song of her own for Justin Bieber.

"She has heard the song, and she is definitely going to respond at some point. She has the mentality now that payback is a b**ch. A song about him has no timetable but it's inevitable," says a source to Hollywood Life.

So far, representatives of Taylor Swift have yet to speak up on the matter. As for Selena Gomez, whose side would she pick this time around: Justin Bieber or Taylor Swift?