What a sad story...almost nightmarish.
The guy sounds like a total waste of space, just so unfortunate that you had to cross the world and spend a fortune finding that out.
Of course us guys take the same chance when we do things the other way round, but I'm sure that's no consolation for you.
Thanks for being brave enough to share your experience. I'm sure others can learn from it.
There will be a nice person somewhere for you, but obviously he wasn't the one.