so basically, it referes to the theory from how i met your mother which says that the potential of a relationship is determined by whether one person in the relationship loves olives while the other one don't. In this case, the one who hates olives gave them to the other so they completed eachother. But the theory is not just about opposing points fitting well together : the most important thing is about willing to sacrifice something you love, to give it to the other.
Ted Mosby, HIMYM : The olive theory is based on my friends Marshall and Lily : he hates olive, she loves them. In a weird way, that's what makes them such a great couple.
Later, Marshall actually admitted that he liked olives but gave them to Lily because she loves olives more
Later, Marshall actually admitted that he liked olives but gave them to Lily because she loves olives more
by legend-wait for it...-DARY November 17, 2023
Get the the olive theorymug. Honestly, one of the most dumbest people alive. Who ever has a name like that is probably a fucking green olive.
by Theismann August 25, 2022
Get the Olivemug. 
by Jesus6920 April 2, 2023
Get the Oliver (Sigma)mug. A very nice man that is not gay he doesn’t like like boys he is a genuine guy that gives great hugs and your jaw drops as soon as you see him if you ever get a chance to see this person go up to him and give him a huge high five
by Subcordanishfly November 18, 2019
Get the Olivermug. 
Oliver or Oli is the cutest person to ever exist. He is amazing at everything. He has the cutest smile ever and when you see it, it never fails to brighten up your day. Oliver denies that he has one but when you see it your opinion will never change. You could get lost in his eyes because of their beauty. An Oli is also very protective of what he loves and will go to any length to make sure it stays safe.
by CrazyGramps February 23, 2020
Get the Olivermug.