Male dark fishing spiders have just one roll in the hay in them. After mating, the arachnids immediately curl up and die.
I know the human dating game can seem rough at times, but the fact of the matter is, we have it pretty good. Don't believe me? Consider if you will the sorry state of Dolomedes tenebrosus, the dark fishing spider. A recent study of the spiders, common around the American midwest, found that males of the species get a grand total of one shot at breeding -- immediately after copulation, their work on this Earth done, the creatures promptly curl up and die.