Would it be Donkephant or Elephonkey?

At this year's State of the Union address, some Republicans and Democrats are planning to play nicely with each other. Usually during the President's Constitution-mandated nap, both parties are separated, jeering and cheering like tweaked-out wrestling fans. But this year, they are abandoning tradition and sitting next to each other, sexual tension be damned. The idea of 'bi-partisanship' is noble and all. Historically, any political hookups between members of opposing parties just don't last. Such star-crossed partnerships have existed, but they end unhappily. It's just like the movie Romeo and Juliet: you can hang out with someone from the other side of the tracks, but eventually there will be stabbings. Here's a look at some of the "strange bedfellows" of American history. None of them lasted long, but at least they tried and that's what counts. Right?