Russell Stover Red Foil Valentines Heart Assorted, Milk and Dark Chocolates, 5.1 Ounce (4 Pack) on Amazon. Russell Stover Caramel Heart in Milk Chocolate, 1.25 Ounce Bar (Pack of 36) on Amazon.

Valentine’s Day sweets make up only about 3 percent of candy sales, and it would be easy to dismiss conversation hearts as mere currency for grade school crushes.

Conversation hearts were still a fan favorite — they were the No. 1 candy in 14 states last year — but they weren't popular enough to overtake the heart-shaped boxes of gooey-filled chocolates ...