DRAW heart design or write Valentine's Day message in each of 8 (6-oz.) clear plastic cups by piping melted chocolate onto inside of cup. Refrigerate until ready to use.

ADD 1 cup boiling water to 1 pkg. jelly powder in medium bowl; stir 2 min. until completely dissolved. Stir in 1 cup cold water; pour into prepared cups. Refrigerate 1 hour or until jelly is firm.

MEANWHILE, add remaining boiling water to remaining package of jelly powder in medium bowl; stir 2 min. until completely dissolved. Add enough ice cubes to remaining cold water to measure 1 cup. Add to jelly; stir until thickened. Stir in Cool Whip with whisk until well blended. Spoon into prepared cups. Refrigerate 3 hours or until firm. Decorate with sprinkles and candies just before serving.