I've always been of the opinion that you won't be able to make someone else happy if you can't make yourself happy. Depending on another person for happiness is guaranteed misery. Find your own way to enjoy life, and try to find someone to share it with. Don't make someone else your lifeline to being emotionally stable.
For what it's worth, I didn't make my wife my emotional lifeline. She truly wanted to help me. It could be luck, but it seems more basic than that: people naturally want to help others they care about.
