According to Glaser, involving a friend, family member, or third party in your conflicts instead of directly addressing and resolving them together is a clear indication of triangulation.
In triangulation, your partner uses a third person to convey feelings about your relationship instead of directly discussing with you.
Private discussions with others about you can lead to feelings of exclusion and isolation, notes Dr. Lacy. They might even manipulate perceptions by casting themselves as a relationship victim.
Dr. Lacy: Triangulation and gaslighting connect. They undermine you by discrediting feelings with others' views, sowing doubt and distorting reality.