Triplets represent a type of insecurity, where the person you are dreaming about wants to be close to you but is afraid that you will replace them. This is commonly associated with feelings of cravings for unhealthy behaviors such as smoking, drinking, substance abuse.
Triplet dreams can also be interpreted to make someone feel useless and unintelligent, as they may imagine that subconsciously they don’t deserve your love or support. In a sense, the third person in the relationship is always left on the outside looking in.