To dream about a love triangle suggests you are dealing with issues of power and jealousy in your waking life.
If you dreamed about about your boyfriend’s (or crush’s) ex-girlfriend, you may be comparing yourself to the ex.
The dream is warning you not to make the same relationship mistakes that ended their relationship. Other love triangle dreams can suggest the dreamer is too hesitant in standing up for their own rights.
To dream that you have been outwitted by a rival in a love situation signifies that you have neglected your responsibilities for the pursuit of leisure and ease, which could lead to some negative consequences.
To dream that you outwit a rival in love suggests that you will soon find your love match, or advance your social position.... My Dream Interpretation
The three major aspects of human nature—body, personal experience and impersonal consciousness, similar to the number three—see numbers. Triangle with point upwards: depicts the physical aspects of human nature moving towards the personal or conscious. Triangle with point downwards: the areas of consciousness moving towards physical expression. Tnangles linked in star of David: complete balance in human nature Sometimes the points of the mangle are used to represent three stages of human development of awareness.
The first is the undifferentiated or preconscious stage, the second is the sense of individuality, feeling otherness’ in regard to the world; and the third is the relationship of the self to the other’ in people and the world. ... A Guide to Dreams and Sleep Experiences
Looking at, stepping into, or having a triangle thrown at you: you have a hidden talent for scientific research. As a spiritual sign, the triangle represents a heightened sense of serenity. In a man’s dream the triangle is usually a symbol of female genitalia.
Depth Psychology: The triangle is the symbol for a “triangulated” affair. It may, however, also indicate that contradictory traits in your personality can be balanced in order to create something new. See also the chapter “Numbers in Dreams—Number 3.”... Dreamers Dictionary
Dreams of a triangle signify a sacred trinity. This dream may be giving you the message that you are integrating your mind, body and spirit, or integrating the father, mother and child aspects of yourself. You may be feeling the power or the tension of being between two important people in your life. See Three.... Strangest Dream Explanations