Chocolate Lover is an intermediate achievement requiring the consumption of 25 that leads to , which takes 100. Chocoholic is part of the meta-achievement for the Noblegarden world event, so Chocolate Lover is too, indirectly.
Despite what the text says, you can also get this achievement by eating the chocolates outside the period of the Noblegarden celebration.
Patches and hotfixes
Patch 3.1.0 (14-Apr-2009): Added