The Platinum Rule far predates the How I Met Your Mother episode of the same name. It is similar to the Golden Rule, but more considerate.

It states "Do unto others as they would have you do unto them, not as you would have them do unto you."

The Golden Rule is to treat others as you want to be treated, but the Platinum Rule understands and accommodates for the fact that not everyone wants to be treated the same way. It says that we should treat people how they want to be treated, regardless of how we might personally want to be treated in similar situations.

The Platinum Rule is a much more empathetic, sensitive moral guideline than its predecessor, the Golden Rule, which ignores the wishes and preferences of the recipients of the behaviour in favor of imposing the giver's preferences onto others in a misguided attempt at kindness.
I like having doors held open for me, but Jane prefers to open her own doors. Instead of insisting that she shut up and let me open her doors, I abide by the Platinum Rule, and I let her open her own doors when she wants to.
by Joreth November 1, 2011
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The Platinum Rule is the rule above the Golden Rule. The golden rule being "love thy neighbor"; the platinum rule is "never ever, ever, ever 'love' thy neighbor" (have sex or intimate relations with them).
The Platinum rule comes from 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.

The 9 Stages of the Platinum rule are: Attraction, Bargaining, Submission, Perks, Tipping Point, Purgatory, Confrontation, Fall Out, and Co-Existance.
Attraction: Getting attracted to the person(s) you see on a daily basis
Bargaining: Saying that all would be alright and the Platinum rule will not apply
Submission: Giving in to the relationship
Perks: Noticing the upsides to the relationship
Tipping Point: When you notice that it won't work out
Purgatory: The never ending suffering that will follow
Confrontation:Ending the relationship
Fall Out: A reaction, a bad one, from the confrontation.
Co-Existance: Learning to live with that person(s)
Such relationships will never work out and will go through all 9 steps if its with someone you see on a daily business.
Anthony: Hey I'm gonna take my doctor out on a date tonight!
David: Don't poop where you eat Anthony.

Anthony: What do you mean?
David: The Platinum Rule.
Anthony: No, this doesn't count.

-A few weeks later-
Anthony: You were right. This relationship was a total failure.
David:The Platinum Rule is proven once again.
by ShadowSenpai August 20, 2014
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An expression that was used in How I Met Your Mother.
It's a warning that is trying to avoid dating with people you have to work with, be in the classroom or people employed in your favorite pub, gym, club... Or a friendship with your new neighbours.

Platinum rule has 8 steps.
Step 1: Attraction - it's so easy to surrender.
Step 2: Bargaining - the time when you try to persuade your friends that platinum rule doesn't apply on you.
Step 3: Submission - everyhing seems alright.
Step 4: Perks - like: we can be together all the time - but that's crazy...
Step 5: The Tipping Point - now you realize that maybe it was a big mistake.
Step 6: Purgatory - now you know for sure that it was a big mistake.
Step 7: Confrontation - time to end the relationship or friendship. Normally starting with words: Well, I really like you but ...
Step 8: Fallout - because it's a person that you have to work with you must face the consequences connected to what happend between you.

Maybe there is also Step 9: Rescue - everything should be ok since this point.
X: Oh, i met a great girl today at work. And she's really hot. I would like to go on a date wit...
Y: Forget it, don't you know the platinum rule?
X: What rule?
Y: I'll explain it to you. Step 1......
by Traitorcz May 5, 2008
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An expression that was used in How I Met Your Mother.
It's a warning that is trying to avoid dating with people you have to work with, be in the classroom or people employed in your favorite pub, gym, club... Or a friendship with your new neighbours.

Platinum rule has 8 steps.
Step 1: Attraction - it's so easy to surrender.
Step 2: Bargaining - the time when you try to persuade your friends that platinum rule doesn't apply on you.
Step 3: Submission - everyhing seems alright.
Step 4: Perks - like: we can be together all the time - but that's crazy...
Step 5: The Tipping Point - now you realize that maybe it was a big mistake.
Step 6: Purgatory - now you know for sure that it was a big mistake.
Step 7: Confrontation - time to end the relationship or friendship. Normally starting with words: Well, I really like you but ...
Step 8: Fallout - because it's a person that you have to work with you must face the consequences connected to what happend between you.

Maybe there is also Step 9: Rescue - everything should be ok since this point.
X: Oh, i met a great girl today at work. And she's really hot. I would like to go on a date wit...
Y: Forget it, don't you know the platinum rule?
X: What rule?
Y: I'll explain it to you. Step 1......
by Traitorcz May 4, 2008
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