Taylor Swift, Calvin Harris celebrate 1-year anniversary with cake, locket

Taylor Swift, Calvin Harris celebrate 1-year anniversary with cake, locket
Taylor Swift embraces DJ/producer Calvin Harris after winningthe Top Billboard 200 Album award during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas. (Ethan Miller / Getty Images)

After a year together, Taylor Swift and Calvin Harris have marked their major relationship milestone with jewelry and a dessert, natch.

The "Bad Blood" singer and the deejay, real name Adam Wiles, commemorated their young love on social media, with her posting a picture of her new golden locket on Instagram on Sunday evening and him SnapChatting video of a "1 year" cake.

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"3.6.15 One year down!" wrote Swift, 25, posting the snapshot of the vintage-looking trinket engraved with the date.

3.6.15 One year down! ¿¿

A photo posted by Taylor Swift (@taylorswift) on

The Scottish EDM star, 32, wanted to get his girlfriend a meaningful gift to mark the occasion and reportedly stashed "something special" (and also top secret) inside the locket, E! News said.

Harris' Sunday SnapChat video showcased a homemade cake frosted with "1 year" on it and a voiceover in which he repeated the phrase. He then cuts to an excited-looking Swift nodding in approval.

The musicians reportedly met in February 2015 at a Brit Awards after-party and started dating last March. Still, they didn't really go public until a few months later, after a series of Calvin-and-Taylor sightings sent the "new couple" rumor mill into overdrive.

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Since then, they've shared their PDA on social media and at awards shows and kept fans and followers speculating about potential upcoming tracks inspired by each other.

OK, maybe that last part was just us.

Follow me on Twitter @NardineSaad.