Things seem to be getting worse between Justin Bieber and Taylor Swift. The two have never publicly confirmed their dislike for one another but it has been speculated. Recently, Bieber added fuel to the fire by retweeting a fan who asked if the singer's new song "All Bad" was taking a jab at Swift, Hollywood Life reports.

"I think Justin was shading Taylor in #AllBad," @IKidrauhlic tweeted. After the singer retweeted the comment to his more than 46 million followers the fan then wrote "So basically Justin admitted the [sic] he was shading you @taylorswift13." He has since deleted the tweets from his account.

Uh-oh. According to rumors, in the song Bieber basically accuses the "22" singer of getting in between his relationship with Selena Gomez.

"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," he sings. "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."

So will Swift retaliate or sweep the jab under the rug? She hasn't wrote anything on Twitter about Bieber's comment but a source told Hollywood Life that she has heard the song and will definitely write a response to it.

Swift is notorious for dissing ex-boyfriends in her catchy tunes and now Bieber looks like he will be the next one she is singing about.

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

Should Taylor Swift write a song in response to Justin Bieber's "All Bad?"