Keep using items like Protein, Iron, Carbos, Zinc, Calcium and Hp up on your Pokemon also have it hold Soothe Bell while your training it. Also don't use items that say its bitter and don't let it faint and don't let it have a status problem for too long, try to constantly heal it and use items on it and level it up to get full friendship.
Chat with our AI personalities
you have to have full friendship with it
It's in the lost cave
First you need a chansey which firered and leafgreen can get then to evolve chansey it needs max friendship with its trainer it will then evolve to blissey.
You need to get it's friendship to full.
Go to your home in the game, and the house to the right of you. It should be Gary's house. Go in it, and talk to his sister, "Daisy." She'll tell you.