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.
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.
trade a chansey over from firered/leafgreen and get it to full friendship
Friendship
no, you have to get friendship at night and there is no night.
You trade an Eevee from FireRed or LeafGreen and max out friendship at night.
Blue's sister is the only friendship rater in FireRed or LeafGreen.
you need to make your golbat have a high friendship, then level it up
yes u just need the national dex and a chansey with extremely high friendship
you have to have full friendship with it
Nowhere
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 can't. to get an espeon or umbreon, you need to evolve an eevee at certain time of day. leafgreen/firered don't have clocks. you have to trade the eevee to ruby/sapphire, max out friendship and level up in the pm for espeon, am for umbreon.