It's true that this guy's behavior could be interpreted in two different ways, and both are completely plausible scenarios. Maybe it's just a complete coincidence that you kept crossing paths. Or maybe this guy is serious trouble... Either scenario is completely possible.
I would trust my gut instinct all the way on this one. An interesting book you may find interesting is The Gift of Fear, by Gavin de Becker. He explores fear in-depth and talks about how our instincts alert us to trouble and why we should listen to them. I can't recommend this book enough.



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