As a blank note card, this has been popular for Valentine's day, available singly or six to a package. It is also often sold as a greeting card with a wedding message inside. Valentine's Day and Ash Wednesday share the same date this year, as will Easter and April Fool's Day! Apparently this hasn't happened since 1945. Well, since we can't start Lent with a love-inspired chocolate binge, we're just going to have to pop the champagne and break open those heart-shaped boxes the day before, on Valentine's Day Vigil.... not too hard to remember, since that will be Mardi Gras anyway!