I honestly cant see what the problem is. Probably different work environment. Im in the office all the time. Im friendly and sociable to everyone. I wont go around telling them that Im part of a community of pick-up artist and that I read "the game". When I go on a night out with them, and they see me chatting to girls, they just think Im just being my sociable self again like I am at work. No need to disclose anything unless the subject comes up...!

Much Success!

p.s. good luck with the job matey!