"I wanted to share some news with you," Taylor Swift said in a new video message to her fans, "because we're finally making it official with one of the great loves of my life."

No, it's not Harry Styles. Or Conor Kennedy. Or Taylor Lautner, Jake Gyllenhaal, Joe Jonas, John Mayer, Eddie Redmayne, Tim Tebow, Chord Overstreet ... or any of the rest that we're probably forgetting.

Swift's great love? Diet Coke!

"We've been in conversations about this partnership," Swift continued. "It's gonna include so many fun things having to do with the tour, having to do with Diet Coke in general, a behind-the-scenes of the commercial," she gushed. "I really can't wait to begin all this, and it's going to be an extraordinary ride."

The saccharine-sweet Swift is the perfect match for the saccharine-sweetened soda, which marks only the latest in a slew of commercial partnerships for the 'Red' singer. In the past year alone, Swift has teamed up with CoverGirl cosmetics, Keds shoes, Papa John's Pizza, Walgreen's and more.

The clean-cut country crossover starlet is Coca-Cola's answer to Pepsi's Beyonce campaign -- and their signature crimson shade goes perfectly with her obsession with red ... and with 'Red.' Bottoms up!