Was Giles pretending the entire time?

The way he seemed so out of touch with newer aged things like simply going out on a date with Jenny. He seemed so square with her. Whole time he knew how to party and raise demons! I get he had a cover he had to keep up but it just seemed that he knew nothing about socializing and relaxing. Sorry if I’m not making sense but I’ve always wondered that. He was basically the koolest person in the group.