The characters on Six Feet Under were fascinating to watch, but they often made horrible romantic choices. Even the couples that stood the test of time had their issues. Most of the truly memorable train wrecks didn't last, though. Here's a look back at some of the show's weirdest relationships.

Ruth Fisher and Arthur Martin - Ruth and Arthur's relationship was arguably the most awkward pairing in Six Feet Under history. Apart from the significant age difference, the relationship suffered from a lack of physical intimacy. You can't build a romance on nuzzling and spooning alone; it didn't take long for Ruth to figure that out. Ruth dumped Arthur, and things took a turn for the worse when she suddenly married George Sibley. Arthur showed his jealousy by arguing with George over the origins of the word "formica" and labeling his food. They finally parted ways after the "poo by mail" misunderstanding.

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(S03E08) Two words: Jeanne Tripplehorn. Keith's paintball revenge was his finest moment on the show as far as I'm concerned. The Fishers and Diazes played against type and became people of action, if only for a short while. David and Keith settled their differences on the battlefield, Ruth made several uncomfortable moves on Arthur, and Lisa sized up her competition. Petrarch, head lice, and polygamy also came into play.