Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.
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. 
In trying to convince Ted not to date Stella, his dermatologist, 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. 
- Tipping Point
- Fall Out
- Co-existence (added by Ted)