I used to do that cause I was a *****. Then I grew balls and didn't pretend to like someone for the sake of awkwardness. Don't be fake.
its called not being a grif. you know, you should just friend request loads of people with the message '**** you *****' and see who will accept.
Oh lay off of Grif. lol Seriously though, pretended to be cool with someone who you can't stand is bs. "Befriending people on facebook" still shows a sign of being FRIENDS. Don't be lame like that.