“You can't overdose on friends, only enemies.”
“Money can't buy you friends, but you do get a better class of enemy. ”
“There's ways you can trust an enemy you can't always trust a friend. An enemy's never going to betray your trust.”
“You cannot be betrayed by your enemies, only your friends.”
“If you can't make yourself understood by your friends, you'll be in trouble when your enemies come for you.”
“How do you explain to your friend's mother why a night out with friends has left her daughter dying from an ecstasy overdose?”