I suppose most good players have to be good liars in that when they bluff they are trying to sell you a story where they have you beat, when in fact the opposite is true! But it doesn't necessarily mean they are Liars in every other aspect of daily life.
I have some great Friends that will try and bluff when playing Poker, but I would trust them with my life when it comes to more important things, I know from experience that some will show a bluff when they make one just to stay honest, but I except that Poker is just a game, and it's fun to make a bluff now and again.
Many children played "Cowboys and Indians" when they were younger, but that does not make them natural born Killers, in reality many would not even own a gun in later life, Because like Poker, War games on computers or other devices are just games!
Every time I see a car chase on TV news channels my immediate thought is "another damned idiot that played too much GTA on the X-Box" most responsible adults simply pull over and accept that they may or may not have committed a crime, it could be something as simple as you have a tail light out!
Being good at Poker does not mean you are a natural Liar! You are just good at playing a Fun Game!