Selena Gomez might find herself stuck in the middle of a brewing war between off-and-on-again boyfriend Justin Bieber and longtime girlfriend Taylor Swift.

Rumors are running rampant that Bieber blames Swift for some of his and Gomez's ongoing issues and is convinced that without her meddling all could be fine.

Bieber Convinced Taylor Standing in his way?

The 26-year-old Swift has never made it a secret that she isn't a fan of the two's long rocky romance and now Bieber is letting it be known that he feels she may be standing in the way of yet another potential reconciliation.

"Justin knows Taylor doesn't like him and never will and the feeling is mutual, but he is smart enough to know not to say anything in public or on social media because he knows all the scrutiny he'd endure," said a source. "He never expects to be her friend and is not looking to be her friend. He blames Taylor for some of his issues with Selena and that will never go away."

That seems just fine with the "Bad Blood" singer, who as recently as the iHeartRadio Awards in California earlier this month looked on in cold silence as the 22-year-old Bieber performed to big applause.

Gomez, Bieber Still Riding Rollercoaster

As for Bieber and Gomez, the two appear to be as up and down as ever.

Word is after a heated argument Bieber abruptly canceled recent date night plans between the two where he was set to rent out the Staples Center and screen her favorite movie "Titanic."

"The speculation is that an argument had taken place between the two," said a source. "Something had shifted Bieber's mood completely."

Only days before, Bieber posted a throwback pic of the two kissing on his Instagram page that attracted more than three million likes and a "Perfect" comment from Gomez herself.

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