if they laugh when you ask them
its inposibble no one can but if some one says they know how to there lying
Yes you can. If they can't look you straight in the eyes their lying, If they do they aren't
One can tell if a man is lying or not by various means. One can read the body language of another person to know this fact. Some other things are also there to know if a man is cheating or not such as if he is speaking properly or not.
There is no way to know if someone is lying about their sexuality. Some may be very private about their sexuality while others are very open.
Well, if you threaten to track him or her down, and kill them if they ever leave you, it doesn't really matter if they actually love you.
because they have such big heads ,metaphorically :)
Ask her. If you can't tell she is lying, she isn't the one for you.
of cource its ok why would you ask.
I don't know yet actually no one knows if there is such thing but if YOU know then tell me if you are lying or not.
because they tried to impressed you or fit in
She could be lying to avoid hurting you, or she may not know she is flirting. Some people do not know when they are flirting. Talk with your friend about your feelings.
If you know for a fact they are lying, then simply tell them. I know you are lying about whatever and I want you to stop. They don't have to of course, but you at least have told them. Just make sure you know what you think you know.