One of music's most adorable couples, Taylor Swift and Calvin Harris, just celebrated a very special milestone—their one-year anniversary.<br />The Grammy-winning lovebirds marked the occasion with a sweet treat—a seemingly handmade cake covered in chocolate icing with the phrase, "1 Year" in white bordered by giant red hearts.<br />In a video posted to his Snapchat account, the record producer filmed a smiling Swift nodding with glee as they officially showed off the dessert to their fans.<br />"Calvin knows that Taylor is the woman for him," the source continued.<br />"Out of all of Calvin's relationships, he seems the happiest with Taylor.<br />He always says to all of his friends that Taylor is marriage material."
