I buy the parallel universe theories. It's essentially like tuning in a radio to different stations. We're tuned to this universe, our doppelgangers are tuned to parallel universes and spirits are in a different dimension yet. But through meditations it's believed that we can pull ourselves slightly and sense another parallel to gain insightful information. Some parallels are happening now, others in the past, others in the future and they are infinite in number.
As far as that relating to MLC, probably very little. Unless, as some theorize, there's bad energy bleeding over from a parallel where a war or tragedy is happening in the same spot and it makes inhabitants of that land feel anxious. I sense unease on some lands, but have yet to run off with a college girl for that or any other reason.
With free will and our prefrontal cortex we have complete control over what we do despite surmised cosmic influences. Parallel dimensions, karmic contracts in previous lifetimes that dictate two people will meet in this life (and start a relationship), or just plain hormones are no excuse for people throwing out their common sense and acting like hedonists.