Did I offended someone? I developed my social skills around 15/16. Before that I was set to be socially awkward and I was quite shy. I put my self in situations were I could mature socially - which I did. My grades dropped because I wasn't studying all the time but I am glad of it.

I read things here like "I'm not sure when to wave", "How do I leave a conversation?" etc. Those things are natural to me now.