Season 7: Episode 10 - That's Why They Call It Ball Room

That's Why They Call It Ball Room: Chelsea convinces a hesistant Charlie to take up ball room dancing classes in preparation for their upcoming nuptuals. While at class Charlie gently bring up the idea of a pre-nup only to have Chelsea happily agree to it. When Charlie discovers that Chelsea owns a couple of apartment buildings it really upsets him. The balance of power has now shifted now that Charlie realizes that Chelsea isn't with him for his money. He wonders what it could be.