to get strung along over a long period of time with the implicit notion that a great partnership will be the reward for showing commitment. then at the moment of the anticipated union, a betrayal in epically cruel fashion takes place. leaving the loyal party feeling devastated while the other runs off with another 'sexier' partner. the betrayer pointing to the logical nature of "the decision", while completely ignoring the abject cruelty of it's delivery.
I was dating a friend once and after we got back from a Caribbean vacation she totally Lebroned me for some guy she worked with. We don't speak anymore.
I once had this great invention and an investor came to look at my product. I never heard from him again, but I was totally Lebroned when a year later I saw that guy on the cover of Forbes with my idea.