Have you thought about holding the wedding off for a bit so you can try and sort things out with each other?
I have the same problem with my fiance sometimes and usually it's just because we need some space from each other for a bit so one of us will go out for a few hours or for the night and then it's fine the next day, have you tried that at all?
Sorry I don't have much in the way of advice, hope this helps a bit though
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