It's been one whole year since Calvin Harris and Taylor Swift first fell in love!

The lovebirds took to social media to share some anniversary love on Sunday. Calvin posted a too-cute Snapchat of his 26-year-old girlfriend.

The music man showed off a "one year cake," which featured two frosted hearts atop it.

In the vid, Calvin says, "One year. We got one year cake. We got one year cake. It's one year." Along with the video, he wrote "1 year ... that was easy." And it looks like it was.

Other than a brief time where reports said that the two broke up after Calvin went to a massage parlor -- the two seem to have had a very healthy relationship. We love that T-Swizz seems so happy!

In addition, an equally smitten Taylor posted a photo of a locket on her Instagram with the caption, "3.6.15 One year down!"

If she has one year down -- we aren't sure how many more she has to go with Calvin -- but it sounds like she's in it to win it with the Scottish DJ!