I was in the same situation nearly twenty years ago, when I fell in love with my first wife, a beautiful Hungarian woman, who passed away about a year ago. So long as you're serious about explaining the situation with your woman, it shouldn't be a problem.
You just have to think about the long term. You plan to be with your new woman for twenty years at least. What's a delay of six, even twelve months. It's like nothing. And besides, if there's nothing you can do about it, there's no point in worrying about it, or making yourself unhappy.