How to trust someone again who has consistently lied?

Rebuilding trust after a betrayal is one of the greatest challenges a relationship can face. When we trust someone, we’re not afraid to be goofy and quirky, and we freely share our hopes and our fears. Ultimately, it's trust that allows us to give and receive love. When trust is violated, we become self-conscious and hesitant for fear of another humiliation. But if the relationship is truly valuable and your love runs deep, trust can be re-established and relationships that survive disharmony often emerge stronger and more rewarding for the experience. In order to regain trust in someone else, you need to heal. Quite possibly, this other person hurt you dearly. You'll want to grow from this situation by turning lemons into lemonade, but to do so, you should take a little time for yourself. In the heat of the moment, your emotions can cloud your judgment. That means that it's hard to think straight, and you could end up saying things that aren't exactly helpful in fixing the situation. How you feel is very important, and it's a big part of regaining trust, but it's also not productive if you don't step away for a little bit. It's going to be hard not to think about what happened, but try to. At least for a little while. Do something so engaging that you become completely enthralled in the now — go away to a cabin by the lake with your friends, go rock climbing and sweat a little, or have a great conversation with a total stranger. For the time being, forget what happened.

Depending on the severity of the lies you can simply try to slowly build up the trust again by building an honest relationship with them. If their lies are severe (I know that severity has greatly different meanings for people) you can put them on a probationary period so to speak. Try having them be honest with you about everything, if they lie and you are able to catch it than you could draw attention to that. Let them know how it makes you feel when they lie. If the relationship is only causing you pain than you might want to look for another option such as distancing yourself from that person. I do not like to suggest this simply because that is just the way that some people are, sometimes people don't even realize that they are lying or that it cant hurt to lie about a specific thing. If this is a relationship such as boyfriend/girlfriend or husband and wife, than I would suggest that you two go to couples counseling. It will help you both in the long term. You can suggest that they go to counseling and or make an active effort to fix what they have done. Often times compulsive lying is a result of anxiety and/or depression. They may have issues that manifest in this way so it is key to have an open relationship and make sure that all of the problems are laid out if they are willing to do so.