When someone doesn't necessarily lie but they don't tell you everything, it is often referred to as "lying by omission" or "half-truths." These terms describe a situation where someone intentionally withholds relevant information or only provides part of the truth, which can be misleading or deceptive.
Lying by omission involves leaving out crucial details or facts that would give a more complete and accurate picture of a situation. While the person may not be directly stating a falsehood, they are still manipulating the truth by not disclosing everything.
This behavior can be problematic in interpersonal relationships, as it can erode trust and create misunderstandings. Open and honest communication is essential in building and maintaining healthy relationships, and withholding important information can damage that foundation.
It's important to strive for transparency and clarity in your interactions with others to foster trust and avoid potential misunderstandings. If you encounter someone who consistently engages in lying by omission, it might be worth addressing the issue directly with them to establish healthier communication patterns.