That don’t even come from her.
"You can never be too rich or too thin."
Came from some other socialite, not Wallis. It became associated with her because she had a needlepoint pillow with the phrase on it that was frequently recalled by visitors.
"You have no idea how hard it is to live out a great romance."
The source for this was an anonymous “friend” in a tabloid, yet it turns up time and time again. If you think this is legit, then you must also believe Kate is currently 20 months pregnant with twins because an anonymous “friend” of hers said that in a tabloid way back. Not to mention this is phrased in the melodramatic way common among quotes manufactured by tabloids. People don’t actually talk like that to their friends, and friends don’t remember exact quotes anyway.