Los Angeles, California - Taylor Swift is famous for her "girl squad" of A-list besties, but is there secretly some bad blood between the stars?

According to a Daily Mail report published Tuesday, the 34-year-old pop star's longtime pals Selena Gomez and Blake Lively have made it a point not to cross paths, despite their mutual friendship with Taylor.

An inside source claims the two simply don't "mix," leading the Grammy winner to hang with them separately.

"This is the reason neither of them are ever with Taylor at the same time and are constantly avoiding run-ins with each other," the informant said.

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The gossip comes after Taylor enjoyed an early birthday celebration with Selena before hosting a star-studded bash on her big day. Blake attended that party, but the 31-year-old Single Soon artist was notably absent.

"Taylor knows not to mix Blake and Selena in the same room and that it must be two separate nights," the insider revealed.

The 36-year-old Gossip Girl star was also a frequent guest of Taylor's at NFL games last season, and reports have claimed Selena was invited but simply wasn't interested.

However, Selena later left a suspicious comment on social media that led many to believe she had actually been excluded.

In February, a fan shared a snap of the Karma singer's suite at Super Bowl LVIII, which showed Taylor and Blake smiling front and center.

The Rare Beauty founder popped up in the comment section, leaving a teary-eyed emoji followed by a heart, leading some to speculate that she was not invited.

According to insiders, Selena simply has a "different role in Taylor's life," and Blake is the usual pick for high-profile party scenes.

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However, Selena did make one public comment about Blake that seems to suggest potential tension between the two.

In 2016, Selena told ELLE magazine that she had never met the Green Lantern actor before.

"I wish she was my friend, but she's not my friend," she told the outlet at the time.

Given their respective bonds with Taylor, the comment certainly raises some eyebrows, but according to sources close to the stars, "It is just the way it is and the way it always has been."