If you dream about a character from a movie, this is probably a sign that something from your unconscious mind is about to emerge or be revealed. It may also represent memories, images or scenes from your past that watching the movie stirred up.
To dream of falling/being in love - or becoming physically intimate in any way - with a movie character represents your understanding about him or her and the feelings he/she generates in you. Something in your waking life has triggered these similar beliefs and feelings.
If you dream about being friends with a movie character, your dream is telling you that you should have higher self-esteem. You are worth believing in. You need to work on believing that you are a special person. It is not uncommon that a real-life obsession with a certain movie character (or the person who plays that character) may carry over onto your dream world. Also consider the themes of the movie, and the journey the character goes on during the story, for more clues to your dream’s meaning.