A child will not confess to lying to you if she knows you will be angry. Teens usually doesn't have just one reason why they lie to you and to others. They might lie to get themselves out of trouble, to make look cooler in front of other people or even to cover up a lie they told in the past. Whatever their reasons for lying, getting them to confess isn't going to be easy. So if you suspect your teen is lying to you, or has lied to you, you have to go about getting him or her to confess creatively because he or she will probably not going to readily admit it when you ask.