I just would just be an ass and come up with excuses not to see these people as often as I can get away with without looking like a reclusive weirdo. I know exactly what you are talking about, I my self am on a Games design course at uni, and some of the characters I find myself talking too day to day I wouldnt DREAM of introducing to my mates back home, and I avoid these people where ever possible. Obviously You are just more courteous than I, and fair play to you for that.