To dream about a love triangle suggests you are dealing with issues of power and jealousy in your waking life. If you dreamed about your boyfriends or crushes 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.