To dream of a best friend may represent behavior or life situations that are always supportive of feeling good or success. Ideal situations or a preference you have. An ideal opportunity. It may also reflect skills or resources that make your life easier. Feeling that everything in life is falling into place.
Negatively, a best friend may reflect your last hope in a difficult situation. A sign that you may be isolating or limiting yourself. It may also represent a powerful negative influence or a bad habit that feels good.
Alternatively, a best friend in a dream may reflect positive social interaction with other people. Getting along well.
Example: A young girl dreamed of having a best friend that she didn't recognize. In waking life she had 3 guys competing and desiring to date her. The best friend that she didn't recognize reflected her good looks and how new it felt to her to be constantly desired by so many men.
Example 2: A man dreamed of being warned by his best friend. In waking life he was learning new skills that he ended up feeling weren't going to allow him to enjoy his life.
*Please See Friends