For those who have long wondered why Selena Gomez and Justin Bieber didn't quite work out, it's possible that Taylor Swift has just revealed the real reason behind the pop pair's tumultuous on-again, off-again relationship and ultimate split.

After Swift shared an incredibly personal letter today (June 30) venting her frustrations over Scotter Braun's reported purchase of her former record label, Big Machine, Bieber, who is managed by Braun, criticized the "You Need to Calm Down" performer for speaking out against Braun.

Fans were quick to defend Swift on social media, including on Tumblr. On the blogging platform, one Swiftie slammed Bieber for insinuating Swift hadn't given the "Sorry" singer a chance to "communicate our differences."

"You cheated on her best friend and then publicly sided with the man who made revenge porn against her ... was she supposed to invite you over for tea?" they posted, referring to Bieber's ex, Gomez, as the "best friend."

The interesting part? Swift, who is active on Tumblr, appears to have liked the post, giving many the impression that she co-signs the claim Bieber cheated on Gomez.

See a screenshot, below:

Of course, it is possible Swift was just liking the sentiment of the fan's post and not 100% confirming every allegation, but considering how close Gomez and Swift are, it sure would be a serious sign of solidarity if the allegation is true.


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