It's not clear why yet, but TBH, I am really not surprised... They seemed to get serious and get married very quickly IMO, It is still a shame though, as he seemed very fond of her.
Nevertheless, it saddens and dismays me that celebrity marriages seems as dispensable as disposable nappies these days. Do they even TRY to make it work? I mean FFS: it lasted 14 months! I have had food in my freezer longer than 14 months!