I guess it's no different than the nerds here who have spent decades trying to find the "nude raider" code to see Laura Croft's jugs.
That said, I've always been told Japan is more sexually open than the West. I'm not entirely convinced that's true. Seems to me there's a lot of bottled up angst among young Japanese. Men in particular.
Also women's attitudes have changed greatly but men for the most part have stayed traditional. That's part of the reason why women are delaying marriage there. They want careers and independence but their husbands still expect them to stay home and clean. It's a trend across East Asia but it seems more pronounced in Japan. I think that's what makes it so fascinating to outsiders. Japanese culture is a bit quirky, by Western and Asian standards.
Love Plus has spawned a boatload of its own urban legends. I doubt this is a major trend, like the article makes it out to be. It's still sad though. Putting all that emotional effort into something that can never love you back. It's high school all over again.