“Why is he lying” is a natural question, but it shouldn’t trap you in endless interpretation. The most useful next step is to shift from guessing motives to testing for consistency, accountability, and change. Ask for specific, verifiable details. Notice whether he can correct mistakes without punishment or blame-shifting. And set clear boundaries about what you need to feel safe and respected.
Trust isn’t built by one explanation. It’s built by reliable behavior over time. When dishonesty repeats, your choices become clearer: either the relationship learns how to repair, or you protect your wellbeing and move toward a reality that doesn’t depend on fragile stories.