If you dream that you are lying, it means you are trying to deceive yourself into believing in something that goes against your values.
Ask yourself what are you hiding from yourself or from others.
To dream that someone is calling you a liar means that you will be bothered by some deceitful person.
If you dream that someone else is lying to you, this represents your growing distrust for that person.
You may have lost your faith in that individual.
Alternatively, it suggests that you are no longer as confident in yourself as you used to be. To dream that your romantic partner is a liar forewarns that your disagreeable attitude will turn valued friendships away.