This is because they probably feel guilty or ashamed about the lies they’re telling you, and they don’t want to look at you directly while they do it.

They might also shuffle their feet or tilt their head to one side.

By itself, this isn’t totally a red flag, but it’s something to look out for when you two are talking.

Some people will also roll their lips back until they almost disappear, which is another way of closing their mouth so they don’t have to talk yet.

Sweating is usually coupled with dry eyes and a dry mouth. If your partner starts blinking or swallowing rapidly, it means they’re having a tough time right now (and also probably lying).

People often change pitch when they’re defensive. [7] X Expert Source Tara Vossenkemper, PhD, LPCLicensed Professional Counselor Expert Interview. 18 January 2022. If your partner is telling the truth and they’re just worked up about what you’re saying, they might also speak in a different pitch than they normally do.

For example, instead of saying, “We were at the movies,” they might say, “Some people were at the movies. ” Or, instead of saying, “I never said that,” they might say, “Nobody said that. ”

For instance, if you accuse them of cheating on you, they might say something like, “I’m hurt you would even ask that. ” Or, they might say, “You probably hate me, don’t you?”

Unfortunately, people who lie all the time usually have a hard time stopping without professional help. If your partner would like to change their ways, encourage them to go to a mental health professional.

They might also put a password on their phone or computer, even when they didn’t have one before. [13] X Expert Source Tara Vossenkemper, PhD, LPCLicensed Professional Counselor Expert Interview. 18 January 2022.

Some people keep their cheating behaviors strictly digital. If your partner has been sending risque texts or even sexts to people online, that counts as cheating, and you don’t have to put up with it.

If working long hours isn’t believable, they might tell you that they’re spending extra time at the gym or they have to travel for a meeting.