Long story Short

Whenever people especially girls ask me "Did you have any girlfriends in the past?". I turn my head down and say "No". Then they look at me with astonishment and  as if looking down on me ask "Why?" And I give them a rote reply: From observing my friends with girlfriends I have come to the conclusion that I didn't have any girlfriends because l lack the cardinal quality required for having a girlfriend -'Ability to lie without getting caught' ;Everytime I lie either no one believes me or I am caught.
Then I turn my head down again, smirk and say to myself ,if "I say I lie"it is like "A Brit saying all Brits are liers".