Somehow this just doesn't seem like a surprise, so I don't think it will be anything other than a bit of a tabloid distraction.
Evert has been down this path too many times before, and has always seemed a bit flighty and weird. I remember her with Jimmy Connors back in the day, and her other marriages were less than stellar.
As for Norman, while I always loved his "go for it" style and aggressiveness, he always seemed to be all for himself. Not totally a bad thing, but when he "fell" for Evert and had the whole "when your life is perfect" thing going on, which just seemed too much. Once again, too weird to even go into.
I stand by my prediction that the USA tromps the World by at least 4.