Personalities that don't mix

pro2A

Hell, It's about time!
#1
What two types of personalities do you think don't mix? For example an arrogant person may not get along with someone who is stubborn. What other examples can you think of?
 
#2
Someone who is stubborn/forecful, and someone who is shy. The shy one would probably get walked over and begin to feel resentment towards the other.
 

Italiano

Film Elitist
#3
A free-spirited, anti-social creep who listens to Punk, Ska, Dylan and Folk music, drinks liquor, plays music and has a close inner circle of best friends.

VS

A conservative sports-playing bro who goes to big parties, drinks beer, likes Kanye West, has a wide group of good friends and loves Red Sox Nation.