Hit medical drama ER served up some of the most memorable romantic storylines of recent history, though they weren’t all great.

It’s a rare accomplishment for a TV show to be on air for a decade and a half, but ER is one of the few shows that managed to do so. The medical drama was one of the most successful shows in TV history, and it’s characters and storylines had a legitimate cultural impact that viewers and fans still remember today. Because the show was on for such an astonishingly long time, it gave the writers and cast the opportunity to develop fictional relationships with an exceptional amount of complexity, depth, and range. However, like most shows, some of those relationships were massive hits, while others were huge misses. Many of those relationships were memorable, but some were memorable for the right reasons while others were memorable for the wrong ones. So, which of the relationships on this long-running classic were amazing and unforgettable? And which ones do we just wish we could forget?

Worst: Carol Hathaway & Luka Kovac

ER: The 5 Worst Couples In the Show’s History

ER: The 5 Worst Couples In the Show’s History

Way back when ER was a TV juggernaut, George Clooney was undoubtedly its breakout star. It’s almost hard to imagine that he just got his start as a TV star, but his movie career owes a lot to the success of ER. So, when George announced that he wanted to leave the show, it was a big surprise. In order to soften the blow, ER brought in new actor Goran Visnjic. They said he wasn’t supposed to be an actual replacement for George, but the fact that they immediately hooked his character Luka Kovac up with Doug Ross’ longtime love Carol Hathaway would indicate otherwise, and it was an unfortunate cheap trick that just didn’t work for the story.

ER: The 5 Worst Couples In the Show’s History

ER: The 5 Worst Couples In the Show’s History

Even if you’ve seen ER before, you’re probably asking yourself, Carol Hathaway and who? It may come as a surprise, but Carol’s relationship with John Taglieri was a pretty long story arc that almost ended with them getting married. However, this TV ship unsurprisingly never even set sail. The main problem with the relationship, as well as every other relationship that Carol and Doug had with anyone who weren’t each other, was that it was clearly one of the many roadblocks the writers threw in the way of Carol and Doug’s relationship. So, while Carol and Tag’s relationship was supposed to be portrayed seriously, it was really just a relationship between Carol and not-Doug.

ER: The 5 Worst Couples In the Show’s History

ER: The 5 Worst Couples In the Show’s History

When we’re talking about a relationship on a TV drama, it’s normal to expect drama, but the relationship between Greg Pratt and Jing-Mei Chen was downright bizarre sometimes. There wasn’t just drama going on between them; it honestly seemed like most of the time they didn’t even like each other. Granted, it’s not wildly unrealistic to see a relationship deteriorate to the point that people seem to hate each other, but this is TV. There’s no reason to drag things out, and it’s not like the audience was super invested in their relationship or something. This has got to be one of the worst, simply because these doctors waited so long to rip off the Band-Aid and just end it.

Worst: Neela Rasgotra & Ray Barnett

ER: The 5 Worst Couples In the Show’s History

ER: The 5 Worst Couples In the Show’s History

Neela and Ray were a pairing that actually had a lot of potential. But, that potential crashed and burned in a pretty literal sense. Ray and Neela had a great friendship and an interesting back and forth, and they actually seemed like the type who might be destined to end up together. However, after getting in a drunken fight with Neela’s current honey, Ray gets kicked out of a party, hit by a truck, and loses both of his legs in the process. Although they eventually reconciled and the show ends with the implication they might finally get together, the whole accident situation kind of killed the momentum of the relationship.

Worst: Susan Lewis & Jon Carter

ER: The 5 Worst Couples In the Show’s History

ER: The 5 Worst Couples In the Show’s History

Why in the world was this ever even a thing? After years of on-screen friendship, John Carter and Susan Lewis took a shot at an actual romantic relationship. But the show didn’t really explain why, and we’re guessing the writers didn’t even know why. It was one of those TV relationships that seemed borne out of utility instead of actual storytelling. The characters weren’t in relationships with anyone else, and it was just an easy shortcut to give them both something to do and a way to interact with one another. The problem is, it always really felt like a shortcut.

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