1.A: Why did you lie about your age? B: It's no big deal, everybody does, especially woman.
2.A:You lied, you have a girlfriend. B: I didn't, you never asked, A:But all your profiles say so. B: How can you believe that? Everybody lies on the Internet.
3.A: Are you really in a relationship? B: Yes, why do I lie? A: Because everybody does.
('Everybody does' is such a great line! It's so great because you always hear it from those who keep saying they're different from everybody else.)
4.A: Are you really in a relationship? B: Yes, should I lie? A: Well, one shouldn't tell stranges private things.
(Wonder what does a stranger can do to harm me with the fact that I'm taken.)
Please continue ... :_)