If he's extra nice to you when you don't talk to him for awhile. It's a guilty conscience thing. Not neccessarily true, but in some cases it may be. Also if he denies he has no friends or social partners who are females. This would be unusual, since he has a girlfriend(presumably you). But if he's straight up and tells you about his female friends, chances are he's just friends with them and he may think they're cute but he's not cheating. And there's no 100% surefire way to tell that he's lying to you, but if you've caught him lying to you before, it would be best not to rule it out.
Do you know what flirting is? If so, that should tell you all you need to know.
Shouldn't you be able to tell, I can always tell when my friends whom are dating flirt with each other, so I can tell you, it varies from guy to guy. He may gaze into your eyes, poke you gently, lean on you, tickle you, and/or tease you. Later on in your relationship when you get to know each other better, you might be able to tell when he is flirting with you. In case you didn't know, it is okay for girlfriends to start the flirting game with their boyfriends someimes.
Girl Code - 2013 The Morning After Friends of Boyfriends Flirting and Decorating 1-20 was released on: USA: 7 July 2013
how can you tell if a boy is flirting with a girl and also likes her to an extent?
Lying, cheating, stealing, and flirting with other people.
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.
what you have to do is tell her ASAP ! before he says you where the one flirting with him.!
Can you tell if other guys are flirting with you? Nick's a guy, so I'm sure it wouldn't be much different than a lot of other guy's ways of flirting.
If a girl laughs at all your jokes, even when they are not funny, she is flirting with you. If a girl goes out of her way to talk to you, she is flirting with you.
You'll know when he does so. It is quite normal for a guy to flirt with a girl even when he knows that she is his brother's girlfriend. Flirting can be quite healthy for relationship. Just see to it that you don't feel uncomfortable and speak about it with your boyfriend.
cause we can tell
Confront them together in the same room and ask him to see whether he is lying. Alternatively tell her NOT to sleep with him considering that is morally wrong since he is now seeing you! Or if she seems like a lying temptress, ask her for proof that they are sleeping together!