Instructions
Equip your Pokemon with the Soothe Bell. This item raises the amount of happiness a Pokemon gains each time he attacks.
Keep the Pokemon in your party and raise its level by feeding it Rare Candies or having it defeat opposing Pokemon in battle.
Feed your Pokemon vitamins such as "HP Up," "Protein," and "Carbos." Use "Fresh Water," "Soda Pop," and "Lemonade" rather than standard potions to restore your Pokemon's health.
Give your Pokemon a daily massage in Goldenrod City. Avoid feeding your Pokemon bitter items such as "Heal Powder" and "Energy Root," and switch out or heal your Pokemon to prevent it from fainting.