A Psychologist Reveals The 3 Types Of Liars In Relationships (Beware Of The Third)

Habitual liars in relationships aren't all cut from the same cloth—and one type should make you run for the exit. A new study of 567 U.S. adults categorizes relationship liars into three distinct psychological types, with the third type linked to manipulation and emotional abuse.

Psychologists at the University of Texas analyzed self-reported deception behaviors among couples and identified three liar profiles. The study, published in the *Journal of Social and Personal Relationships*, aims to help people distinguish between harmless white lies and toxic patterns that erode trust.

**Context:** Lying in relationships is nearly universal, but not all lies are equal. Previous research focused on frequency or context; this study is the first to cluster liars by underlying personality traits and motivations. The researchers surveyed participants in committed relationships, asking about types of lies told, frequency, and emotional impact on partners.

**Key Details:** The three types are:
- **Type 1: The Social Protection Liar** – tells lies to avoid conflict or spare feelings (e.g., “I love your cooking”). These liars score low on narcissism and high on agreeableness. Their lies are typically infrequent and harmless.
- **Type 2: The Self-Enhancement Liar** – bends the truth to appear more competent or attractive (e.g., inflating achievements). They show moderate levels of Machiavellianism and seek social approval.
- **Type 3: The Malignant Liar** – lies strategically to control, manipulate, or exploit their partner. They score high on psychopathy and narcissism, often gaslighting and displaying a callous disregard for the harm they cause. This type is the “one to beware of,” according to lead author Dr. Emily R. Carter.

**Analysis:** The findings highlight a critical distinction: not all deceptions in relationships are red flags. Occasional social-protection lies are part of normal interaction. However, the malignant liar’s behavior is consistent with emotional abuse and predicts relationship deterioration. Dr. Carter notes that identifying the type early can help partners set boundaries and, if necessary, seek professional support.

**Outlook:** The team plans a follow-up study to track how these liar types evolve over time and whether therapeutic intervention can curb malignant lying. For now, the takeaway is clear: trust your gut if you sense a pattern of deceit—especially if it feels calculated rather than just self-protective. The third type of liar in relationships is not just annoying; it may be dangerous.