So, it was set post-apocalyptic, about a guy, who had a sword, and had a wolf as his guide, and the teens that were still alive were divided up between boys and girls, because when the school had given them "the talk" about STDs, everyone thought they'd die from touching each other. It was written by a guy who also did something like "my thoughts on wedding night sex", which I have been unable to find. Help would be appreciated. Thanks.