Crime drama shows have a bit of everything fans want to see. The drama of solving crime, the gallows humor, and getting attached to the main characters. But there's another aspect to some popular crime dramas that made them memorable: the romance.

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As the main characters go through the trial and tribulations of solving cases and costly being around each other, there's likely some romantic tension between them; one that evolves into love. Thus becoming partners in crime-solving and life.

Grissom & Sara (CSI: Crime Scene Investigation)

Grissom and Sara looking at evidence in CSI: Crime Scene Investigation

The CSI franchise gave audiences new insight into solving crime by steering away from the detectives and instead toward the inner workings of the forensics lab. In the original series, Grissom (William Petersen) has feelings for his teammate Sara (Jorja Fox). Their on-screen romance was even nicknamed by fans as GSR (Grissom Sara Romance).

Sara was brought in to join the team by Grissom after meeting at a lecture. It was clear they had some sort of relationship early on, but this became more obvious in season four before finally being revealed in season six. Their relationship was rocky throughout the show, yet they always came back to each other.

Healer & Young-shin (Healer)

Healer and Young-shin sleuthing in Healer

Fans have easily fallen in love with the romance story in the K-drama thriller HealerThe show has gotten rave reviews as it partnered a mysterious "night courier," with impressive combat and hacking skills, with a second-rate reporter. What had fans rooting for the couple was their unconventional romance in the midst of solving murders.

Young-shin (Park Min-young) uncovers the truth behind her dark past leading her to suffer from panic attacks. The night courier codenamed "Healer" (Ji Chang-wook) becomes her protector after being assigned to her by his boss. As they try to solve a 1992 incident along with present-day murders, they fall in love.

Shawn & Jules (Psych)

Shawn baiting Jules in Psych

USA Network's Psych became one of cable television's most popular detective comedy-dramas. It strayed away from traditional shows and had a unique storyline. Shawn Spencer (James Roday) posed as psychic and becomes the SBPD's consultant. In reality, he really only has keen observation skills he passes off as psychic.

Juliet, or Jules (Maggie Lawson), is one of the main detectives in the show who at first is skeptical of Shawn. She finds his unconventional ways of investigation bizarre but believes in his ability to help. It soon turns into a romance. Shawn and Jules finally start dating in season five. Their relationship gets messy when Jules learns he's not really psychic; Shawn even considers throwing his gimmick away to get her back. By the end, he proposes.

Mac & Harm (J.A.G.)

Mac and Harm in their navy uniforms in J.A.G.

Fans of NCIS know the show was originally a spin-off of the popular show J.A.G. It revolves around Harmon "Harm" Rabb Jr. (David James Elliot) and Sarah Mackenzie (Catherine Bell) who work to prosecute those accused of military crimes. It was no surprise the two characters would end up developing feelings for one another.

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Throughout the show, there was obvious tension but also denial. Towards the end, they finally open the flood gates. They decide to get married but are at odds end of who would retire from duty. The show ends with a coin toss and fans still don't know the outcome.

Maddie & David (Moonlighting)

Maddie and David at their detective offices in Moonlighting

Moonlighting was one of Bruce Willis' claims to fame as an actor. The comedy-drama was about two detectives solving cases through their Blue Moon Detective Agency. The show starts with Maddie (Cybill Shephard) losing her assets and money and almost selling the agency. David then convinces her not to and instead, they become business partners.

The show was driven by sharp dialogue and sexual tension between the characters. The dynamics were interesting to watch as Maddie was a former model who has a drastic career change; David was rougher around the edges. They would sometimes clash, but they still made a good team.

Chloe & Lucifer (Lucifer)

Lucifer and Chloe at a crime scene in Lucifer

Despite Lucifer being tagged as a fantasy show, it still includes police procedural and comedy-drama elements. The show created one of the more unconventional partnerships that had fans hooked. Lucifer Morningstar (Tom Ellis) is through with playing the King of Hell and now lives a lavish life on Earth.

When his friend is murdered, Lucifer meets Chloe Decker (Laura German). He becomes a consultant to the police department and aids Chloe in solving murders all while using his looks, connections, and "what do you desire" trick to solve cases. Their relationship stood the test of time as Chloe learns Lucifer really is the Devil.

Jake & Amy (Brooklyn Nine-Nine)

Jake and Amy announce their pregnancy in Brooklyn Nine-Nine

Fans were enthused to see Jake (Andy Samberg) and Amy (Melissa Fumero) get together rather quickly in Brooklyn Nine-Nine. They have had their memorable moments on the show that were crucial in their relationship. Like when Jake realizes he likes Amy after winning a bet.

The two detectives were opposites who were somehow perfect for each other. Amy was neat, organized, and by the book, while Jake liked to have fun and wing it. Their love for each other blossomed even in the most difficult situations. Like when their wedding is sabotaged but ended up being the most perfect display of what's important to them.

Fox & Dana (The X-Files)

Fox and Dana have a baseball date in The X-Files

While The X-Files was all about debunking and battling the paranormal, it still counts seeing as the main characters went through death-defying situations together to uncover the truth. The show's format inspired plenty of crime series. Alongside the bizarre cases was also a developing romance between Fox (David Duchovny) and Dana (Gillian Anderson).

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The characters were on opposite ends of the spectrum as Fox truly believed in the paranormal while Dana stuck to her scientific guns. There was always tension between them, but it took a while for both of them to admit their feelings for one another. Nine seasons, to be exact.

Castle & Beckett (Castle)

Castle and Beckett find new evidence in Castle

Who knew a mystery writer and an NYPD detective would make a good pairing? Castle was a popular crime drama starring Nathon Fillion and Stana Katic as Richard Castle and Kate Beckett. Castle is a mystery writer with a serious case of writer's block.

He's brought in for questioning when there's copycat murder using his stories as inspiration. At first, Beckett dislikes Castle's charm and eagerness to help in solving cases for inspiration. Along the way, his abilities as a writer prove useful, and they soon start to have feelings for each other. Their relationship is strained at times due to their stressful and dangerous work, but they make it through and even get married.

Temperance & Booth (Bones)

Temperance and Booth with their first daughter in Bones

Bones was another crime drama with a unique spin on solving murders. Instead of the traditional forensics team and the local police department, it took a different route. It focused on Temperance "Bones" Brennan (Emily Deschanel), a forensic anthropologist and her team at the Jeffersonian. Along with the aid of the FBI and special agent, Seeley Booth (David Boreanaz).

The two characters don't exactly hit it off as Temperance speaks her mind and bases her opinion on facts. Booth is more inclined to the human emotional side of things. As the season progressed, they have a deep understanding of each other beyond being just friends and colleagues. They finally admit their feelings and have a profound relationship. One that even rattles the cage of a certain criminal.

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