Have you ever noticed how quickly everyone is to claim another party is lying? No matter how big or small the issue, automatically it has to be the other party.
Here is something to consider before you assume lies. In order for lying to make sense, the liar has to stand something to gain. If there is nothing to gain, it’s fair to assume they are telling the truth.
This is reliable for perpetual liars too. They believe they are gaining recognition by their hyperbolic stories. Or if they have something to hide, this too is a form of gain. If someone finds them out, there will be negative consequences and so, the gain is in avoiding these consequences.