• You can't "sort of" on both sides. That's just No. You have to choose your loyalty straight off, and stick to it. Its like vanilla and chocolate. If you like vanilla, you don't like chocolate as much, and if you like chocolate, you don't like vanilla as much. You don't go rhapsodise about chocolate ice-cream to one friend, then go on about the joys of vanilla ice cream to another friend.
• You never ever EVER use "I know you are but what am I?" or "So?" in an argument. Nor do you seriously reply to rhetorical questions.
• You let your friends speak for themselves. E.g. if your friend said something along the lines of "hey, Bobs new haircuts pretty neat", you do not go "OI, BOB! my friend here thinks your haircut is awesome!" No. You don't go do that.
• Its okay to ignore someone, but you ignore them with style and within reason. What you don't do is purposely say hi to the other person who is walking with the person you're ignoring, and leave out the ignor-ee.
• You do not block this person, and then unblock to tell the person that you have blocked him/her. Thats just lame, and won't do anything to make you look the better person.
gg