Okay, since you emphasised the word "single," I'll bite.
The problem is that whilst Sven is technically single, he is in a very publicised relationship with someone - and has been for 7 years. Don't know if you knew, but Nancy left her husband for this guy. I'm not her biggest fan by any stretch, but she does seem to have been more committed to this relationship than Sven has.
Plus, with all the demands that "unmarried partners" be given the same rights as married ones, this is case in point why that doesn't work. They can be given the benefits of marriage, but not the responsibilities because they're "technically single"? Hmmm...um, no.
I agree it's all over the papers because of the celebrity status of at least one of those involved. It's also one of the most tawdry little affairs I've ever heard of an it only proves how much further into the cesspit the human race is headed. 50 years ago this woman would have been ostracised - now she's a "celebrity" as well.
Ick.