In Causing A Scene, Charlie tells his Dad the truth as to why he doesn’t like hanging out with his cousin as much anymore.
CHARLIE: I know he’s my cousin, I know. You pressure me to hang out with him but you have no idea what it’s like. It’s a constant battle and embarrassment. We went to a house party a good friend of mine was throwing and he ended up getting into a fight with one of my boys. It puts me in a bad spot because he’s my cousin but it was also my good friend and nine times out of ten it’s always his fault.
I don’t want to hang out with him anymore because he’s always causing problems. Wherever we go, whatever we do, he’s always causing a scene. This is why I don’t want to chill out with him as much.