How I Met Your Mother Wiki
How I Met Your Mother Wiki
For the episode of the same name, see The Platinum Rule.

The Golden and Platinum rules.

The all-important Platinum Rule, one of Barney's many theories. It supersedes the golden rule and states that a person should never date someone that they see on a regular basis. As stated in The Bro Code:

Article 83: A bro shall, at all costs, honor the Platinum Rule: Never, ever, ever ever "love" thy neighbor. In particular, a Bro shall never mix it up romantically with a co-worker. [1]

Barney mentions the rule in Purple Giraffe​ ("That's just a recipe for disaster. They work together!"). In trying to convince Ted not to date his dermatologist Stella in 2008, Barney explains that such relationships never work out in the end and lead to never-ending suffering as those involved would constantly see each other. Barney explains the eight stages which this relationship inevitably goes through and applies his theory on three previous failed relationships: his own dating of Wendy the Waitress in 2005, Marshall and Lily befriending their neighbors in 2006, and Robin dating co-anchor Curt Irons in 2007. [2]


  1. Attraction
  2. Bargaining
  3. Submission
  4. Perks
  5. Tipping Point
  6. Purgatory
  7. Confrontation
  8. Fall Out
  9. Co-existence (added by Ted)


  1. The Bro Code, page 108, by Barney Stinson with Matt Kuhn. 2008 by Simon and Schuster, New York, NY. ISBN 978-1-4391-1000-3.
  2. The Platinum Rule

Barney Stinson vte
Friends & Family Robin ScherbatskyTed MosbyMarshall EriksenLily AldrinLeslieLoretta StinsonJames StinsonEli StinsonSadie StinsonTomSam GibbsJerome WhittakerCheryl WhittakerJ.J. WhittakerCarly WhittakerEllie Stinson
Places MacLaren's PubBarney's apartmentGoliath National BankAltruCell CorporationLusty LeopardLaser TagStinson housePuzzlesTotal Rip Fitness
Phrases AwesomeSuit UpLegendaryHave you metTrue StoryWait for itChallenge AcceptedWhat UpPatent PendingThat's The DreamJust... O.K.?Stinson OutPleaseDaddy's home
Others Barney's Blog83Ted's best friendP.L.E.A.S.E.Barney's magicBarney's WeddingHigh FivesThe Bro CodeThe Playbook (book)The Threeway BeltDucky Tie (object)The Eight SlapsNothing Suits Me Like a SuitTuxedo NightBarney's Get Psyched MixParty School BingoPlatinum RuleLemon LawHot/Crazy ScaleThe Mermaid Theory (theory)Freeway TheoryThe Chain of Screaming (theory)The Ewok LineIntervention bannerThe International Date LineFive WordsFake History LessonFake listeningBarney's guysDibsBackwards perspective