Tsukasa's going to remember Nasa making fun of her, and he will pay at some future date. {nods}
As to you people who apparently want Tonikaku Cawaii to turn into some sort of hentai title, apparently you are forgetting the fact that this is a shounen title which will have a few mildly ecchi moments at best, as well as some perverted jokes at times. Yes, we get it that normally, newlywed couples would be at it like rabbits. But having a wife that is probably immortal, combined with marrying her after only seeing her once for a few minutes, well...