5 Long-lasting Effects of Lying by Omission in a Relationship

Trust is the main element in any relationship. If you are hiding an important part of the story from your partner and they get to know it later on or you tell them later on will simply break their trust. They’ll overthink everything you tell them and create a perception that you must be hiding something. 

When an omission is discovered the scenario won’t be limited to “Why didn’t you tell me?”. It may look like: 

• "What else am I missing here?"
• Demanding more and more clarifications
• Being suspicious about your every statement
• Going into detail of everything 
• Feeling uncomfortable about vague answers
• Thinking whether there is anything else concealed

One of the less obvious psychological consequences of being deceived in a relationship is the uncertainty of what really happened. They’ll keep repeating these things in their mind:

• “If they hid that, what else could they be hiding?”
• “Was this the first time?”
• “Why did I not notice?”
• “Can I believe what they are saying now?”
• “Was that previous situation also a lie?”

This does not mean every person will develop anxiety or overthinking after discovering an omission. It also depends on what fact you have hidden and what relationship you are in. 

This reaction has real psychological grounding. Research on secrecy has found that people think about their hidden information, replaying it, worrying about it, far more often than they actually have to conceal it in conversation, and this repeated mental return is what predicts lower well-being, not the secret itself (Slepian, Chun, & Mason, 2017). In other words, it's not the omission alone that wears a person down, it's how often their mind keeps returning to it afterward.

Understanding the reason does not automatically make this thing right, but it can help explain the pattern and intention.

Some common reasons include:

• Avoiding conflict: They want to avoid the argument that will occur after telling the true events. 
• Fear of rejection: They are afraid that their partner will judge, doubt or abandon them.
• Protecting their image: They don’t want to break that ideal image and may want to represent themselves as a responsible, successful, or trustworthy person.
• Avoiding consequences: They know telling the whole true story may lead to difficult questions and they may not be ready to face them.
• Maintaining privacy: They may genuinely struggle to distinguish privacy from secrecy.
• Habit: Maybe hiding something from the truth has become their habit and they are comfortable in avoiding questions.

Wondering “how lying affects a relationship?”. Lying usually isn't a one-time thing. Once someone lies and it "works," it gets easier to do it again. It might feel like the easy way out at the moment, small lies to avoid an argument, hiding something embarrassing, saying "I'm fine" when you're not. But over time, lies work kind of like cracks in a wall. One crack doesn't bring the wall down. But if you keep adding more, the whole thing eventually gets weak.

Here's what happens: trust is basically the thing that lets two people feel safe being close to each other. Every time someone finds out they were lied to, even about something small, something shifts in them. And once that happens, people start questioning things they never used to question, like wondering if their partner is telling the truth even when they are. That’s how lies affect a relationship over time.

Recent research has found that people who lie, even when their lies go undetected, report feeling less socially connected afterward, because lying makes them assume others are lying too (Sprigings, Brown, & ten Brinke, 2023). In other words, deception quietly damages both sides of a relationship, not just the one left in the dark.

The psychological effects of being lied to in a relationship can extend beyond mere pain. Hiding crucial information can have an impact on the relationship in terms of trust, emotional intimacy, communication, and understanding of each other.

However, a healthy relationship does not necessitate total accessibility to everything that goes through someone's mind or relates to their life. Each person should have some rights to maintain certain privacy limits. But when it comes to using privacy to lie, it becomes problematic.

Thus, in order to understand what does lying do to a relationship, one should evaluate all aspects of it including the extent and the nature of the information withheld, its frequency, and its consequences once it becomes known.

When both partners are able to openly discuss the issues, admit mistakes and clearly formulate their attitude towards the issue of privacy, there is a good chance that trust will be restored.