Taylor Swift
Taylor Swift is allegedly depressed over being single. Reuters

Country crooner, Taylor Swift is certainly enjoying the company of her Grammy Award winning BFF, Lorde. After spending the weekend with Victoria's Secret model, Karlie Kloss, Swift was spotted out and about once more with the New Zealand native. What about her other BFF, Selena Gomez? Has she completely forgotten about the "Come & Get It" singer?

Following rampant reports of Selena Gomez being seen with Justin Bieber, sources claim that Taylor Swift is furious over the reunion - so furious that she's been ignoring Gomez. In fact, the source goes on to add that the "Red" singer has given an ultimatum to the former Disney star: cut ties with Bieber or say goodbye to the BFF status for good.

"She is already aware of them getting together and hates the latest developments with Selena and Justin. She finds Justin to be one of the worst people she has ever met. She hates him and hates that he has this control over Selena," says a source to the Web site.

Obviously, Selena has opted to stick with her complicated relationship with the Canadian crooner. As for Taylor Swift, she's found a new BFF to hang out with. Last Sunday afternoon, the blonde singer was spotted getting silly with 17-year old Lorde in the Big Apple.

The power duo was recently spotted last month hanging out at the beach and again during a shopping session. Now, Lorde and Swift hung out in New York City for a day of sightseeing. The two even managed to pose for photographers who kept stalking the two Grammy Award winning performers. Check out the photos here.

Lorde is set to perform from Monday to Wednesday at the Roseland Ballroom in NYC thus Swift's presence was pretty much just to cheer her on. While "Swifties" are delighted with the latest BFF of their idol, some continue to hope that she'd rekindle her friendship with Selena Gomez.

The former continues to indulge in a complicated relationship with Justin Bieber after his countless run-ins with the law. Hopefully, Selena doesn't need another rehab to realize what Taylor Swift has been constantly warning her about.