Knowing whether you are being lied to or not, does not require mind reading or psychic power. Understanding the difference between the truth and a lie can all be determined by a person's behavior, and if you pay attention to these behaviors, you will be able to have a better idea of whether you are being lied to or not. The most important thing you should always remember to do however is to trust your instincts. If you feel you are not getting the entire truth from your partner for some reason, then listen to your instincts. Most people are in good touch with their instincts, but rather not listen to that inner voice because they refuse to believe that their partner would deceive them in any way. Staying in touch with your instincts will help guide you in the right direction.

Though instincts are a great help, they can be tricky. Majority of the times, your instincts will not lie to you, but there are times when your instincts can be influenced by your fears and insecurities. For example, you may already have fears of being cheated on, therefore you may feel that your partner is lying to you and cheating on you, when in fact he or she may be telling you the truth and completely faithful to you. This is why it is essential to understand the behavior of a liar, so that you define the difference between really catching on to a liar, or just being paranoid that your partner is lying to.

One important thing to remember is that the body never lies. If there are changes in the way your partner moves (or not moves) his/her arms, hands, head and the way his/her eyes shift, then you are most likely being lied to. The reason the body language changes when a person is lying is because the person now has to think of a way to seem convincing that he/she is telling the truth. Since he/she knows that whatever they are telling you is a lie, the behavior automatically changes, because they are now trying to act truthful, instead of actually being truthful. One big sign to look out for is in the eyes. If your partner avoids eye contact with you, then he/she is lying to you. There is a fear that you will see through him or her if there is eye contact, so eye contact will be avoided.

Whether you realize it or not, your body also communicates when you talk. When you are enthusiastic about telling your partner something and are telling the truth, you will move your hands around and will look into his/her eyes to make a connection. If your partner is lying however, he or she will tense up, will most likely tone down on the hand movement and eye connection and will seem different than other times. If your partner is the type to still move his/her hands around even when he/she is lying, then pay attention to the timing of the movements. Timing is everything and can define the difference between the truth and a lie. When a person is telling the truth for example, his/her hands (and whatever body movement he/she does) will move at the same time when telling you something. When he/she is lying however, the body language will be off and will usually come shortly after he/she has told you the lie. This is because they have to think about acting natural, and this thinking causes them to be off key, not to mention they are not really telling you the truth.

Another sign of a lying partner is if he/she touch his/her nose or face a lot while talking to you. They will feel nervous about telling you lies and will want to occupy their hands somehow as a way to cover up their lie, such as touching the nose, rubbing their eyes and so on. Your partner may even clear his or her throat more than usual than talking to you, look away a lot and/or say "umm" when lying to you. They are using these as time killers so they can think of how to tell you the lie in the most convincing way possible. These are just some of the signs of a lying partner and are the most common signs. Remember, it is always important to trust your instincts first. If you feel that your partner is lying to you, start paying closer attention to his/her behavior and if there are any changes, then you will be able to catch on to the lies better and can further investigate from that point.