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Robfire is the het ship between Robin and Starfire from the animated series Teen Titans.

Robin and Starfire always seemed to have connection through the series, but didn't get together until the movie Trouble in Tokyo. Starfire's bubbly, sweet innocence balances with Robin's serious, down to earth vibe.

Canon
They are each other's best friend and main love interest throughout the series. Ever since the day the two of them first met, both Robin and Starfire have had romantic feelings for each other, but are completely unaware of how the other feels. However, though they remain unaware, it's obvious to everyone else how they truly feel about each other, as even a few enemies have realized just how smitten they are.

Though Robin and Starfire try to hide their feelings, they are shown to have jealous moments; Starfire is very pretty and boys often flirt with her, which infuriates Robin to no end. Starfire also becomes extremely jealous when girls flirt with Robin, as shown when she was distraught when he spends so much time with her sister, Blackfire, or when he took Kitten to her prom. It is also seen throughout the series that they are at each other's side.

Since Starfire is still new to Earth and its customs, Robin takes the time to help her learn to adjust to life on Earth which also strengths their bond with each other. On occasion this had led to dates (or date-like events). Starfire enjoys Robin's teachings to no end and they get along very well. As there are many hints throughout the show that they have feelings for one another, one significant example is when Robin fights and easily defeats the other Titans when Slade commands him to (The Apprentice). However, it's shown that he actively avoids battling Starfire, and when forced to face her, he refuses to strike her down even when Slade repeatedly orders him to. Robin also defies Slade's orders to be silent, saying Starfire's name before he can stop himself.

Robin is usually the first to jump in and save Starfire when she is in trouble, often catching her when she falls, or shouting her name when she is in danger. There are many times when Robin saves her from falling or being hit by something. Equally, Starfire saves Robin just as often; usually by grabbing him and flying out of danger. Since they are allies and part of a team, these acts are rarely given second thoughts, but Starfire and Robin save one another significantly more often than they save the others.

Though their feelings are seen in almost every episode, there are five main episodes that focuses entirely on their relationship, showing just how much stronger they are becoming while also showing Robin and Starfire growing even closer towards each other. The five main episodes are Sisters, Date with Destiny, Betrothed, Stranded and Go!. The show's finale film Teen Titans: Trouble in Tokyo also had their romance as a major plot point.

Sisters
Sisters is the first episode to show that Robin and Starfire have strong romantic feelings towards each other. At the start of episode, Robin and Starfire are on a Ferris wheel, enjoying a fireworks display together. Starfire is still having a hard time to adjusting to life on Earth, but is enjoying herself. During the ride, she is suddenly snatched by an alien robot. The Titans destroy the robot, and when they return to the Tower they find a surprise visitor: Starfire's older sister Blackfire.

Starfire is at first very happy to see Blackfire, however she soon starts to become upset as Blackfire quickly makes herself popular on the team, due to her rebellious lifestyle and better understanding of Earth. Starfire tries to spend time with her friends, but is blown off as they prefer to hang out with Blackfire. However, Starfire only becomes truly upset when Blackfire is shown to be constantly flirting with Robin. Later on, they all go to a nightclub. Blackfire and the Titans are really enjoying themselves, except Starfire. She goes onto the roof of the club and starts to think that maybe she doesn't belong on Earth after all, seeing that sister fits in much better. Then, to her surprise, Robin appears and ask what's wrong, Starfire tries to avoid the subject, but Robin can easily see that she is distressed. Eventually Starfire explains she is unhappy because she doesn't fit in and is nothing like her older sister. Robin begins to console her, but is suddenly interrupted and (literally) dragged off by Blackfire who wants to dance with him, leaving Starfire by herself on the roof. Later she is attacked by three robots like the one from the Ferris wheel. When Blackfire destroys them practically single-handedly, she is offered the chance to become a Teen Titan. At this, Starfire decides that it's best that she leave the team, thinking that Blackfire is better suited for the job.

Just before leaving, however, she is stopped by Robin. Starfire flies down to him and is about to explain to him why she has decided to leave, but is suddenly attacked and kidnapped by two aliens. As the aliens are about to leave, they are attacked by Robin, who grabbed on to the underside of the ship, saying "No one's taking [Starfire] away." After fighting the aliens, they then learn the truth: the aliens are police, and are after a Tamaranian who has committed many crimes on their home planet: Centuari. Starfire reveals she has never been to the Centuari Moons, but Robin remembers that Blackfire has. The two realize that it's really Blackfire the aliens are after, and she came to Earth so Starfire could take her place in jail. Starfire then soon confronts her sister, fights her and wins. Blackfire is taken away, but not before she swears revenge. The next morning, Starfire is sitting on the Tower's roof. When Robin joins her and asks how she's doing, Starfire replies saying she is sad about her sister, but is glad that the truth was discovered before she was replaced. Surprised, Robin asks what Starfire means. She explains that everyone liked Blackfire so much that it seemed she would take Star's place. However Robin states "Your sister was interesting, but she could never take your place. No one could ever take your place." The episode ends with both Robin and Starfire watching the sunrise together on the rooftop.

Date with Destiny
Date with Destiny is the second episode that focuses on Robin and Starfire's relationship. The villain Killer Moth threatens to release an army of mutant moths on the city unless Robin takes his daughter, Kitten, to her junior prom. Starfire is horrified at the arrangement, but with no other ideas on how to stop them, Robin is forced to agree. Later, Robin tells the Titans to investigate Kitten and find out what her connection to Killer Moth is (unaware that they are related) and Starfire, having found a loophole in "investigating Kitten" acquires a dress and goes to the prom too. Robin is very surprised (and happy) to see Starfire; spending a long time admiring her. When Kitten arrives, he is considerably less pleased, smiling through gritted teeth at Kitten's orders. Starfire becomes enraged with jealousy seeing Robin and Kitten walking into the dance together - so much so that she punches the hood of Kitten's limo so hard, that it immediately becomes destroyed. Throughout the entire episode, Starfire is shown to be out of her mind with jealousy seeing Robin and Kitten together - she even melts a punch bowl and scares a couple when she sees Robin and Kitten dancing. When Robin finds out that the Titans are taking down Killer Moth he immediately dumps Kitten (which makes Starfire very happy). However, to their utter surprise, Kitten reveals herself to be Killer Moth's daughter, as well as the fact that she has the controller that will release the moths. She threatens to release them on the city, unless Robin kisses her. Robin is as disgusted as Starfire is horrified. Just as Kitten is about to kiss him, Robin puts his finger against her lips and tells her "not even if you paid me." He tries to get the controller, but is interrupted by the arrival of Kitten's boyfriend, Fang (a teenage boy with a massive spider for a head) who bats Robin away from her. Starfire then shoots a Starbolt at Fang and asks Robin if he is alright. At the end of the episode after Fang, Kitten and Killer Moth are defeated, the DJ declares Robin and Starfire as the Prom King and Queen. Robin had earlier told Kitten that he did not dance, but at this point he smiles, takes Starfire's hand, and says one more couldn't hurt. Thus, Robin and Starfire share their first romantic dance together.

Betrothed
Betrothed is the third episode that focuses on their relationship. Robin is extremely disturbed and distraught when Starfire announces that she is to marry someone - especially to someone that she's even never met. Upon arriving on Tamaran, Starfire is discovered to be a princess - second in line for the throne - and introduces her friends to her guardian, Galfore, and discovers her sister, Blackfire, is now ruler, as well as the person responsible for her upcoming marriage. Later, when Starfire mistakes a handsome Tameranian for her groom, Robin's reaction of intense disapproval and comical jealousy contrasts to Starfire's approval. When Robin and the other Titans find out more about what's happening, Robin climbs Starfire's balcony and tries to talk her out of the wedding. Starfire tells him she has to get married for the good of her people. Starfire then tells Robin that it's better if he not attend the wedding, knowing full well that Robin doesn't approve of the arrangement. However, before Robin can say anything he is kidnapped. Starfire (having not witnessed or heard him being taken away) sees that Robin is gone and sadly walks back to her room to prepare for the ceremony. However, even though Robin can't fully see it, Starfire is not happy with the situation either, as she is forced into marrying someone she doesn't love. She is willing to go through it, though, because it will save her people. Later, after Blackfire's plot is discovered and Starfire has won the crown, she tells her people that she fought her sister because Blackfire was not best for Tamaran, but neither is she herself. She gives the crown to Galfore, knowing he will care for her planet as he cared for her. Before leaving, Starfire tells him that when she is ready to be married "I shall choose my own husband. Who is to know? Perhaps there is a groom for me on Earth," as she bids Galfore goodbye, and walks side by side with Robin back to the ship, a clear foreshadowing of the future.

Stranded
Stranded is the forth episode. It is also considered to be one of the most important, as Robin and Starfire came very close to finally admitting how they truly feel about each other. At the start, the Titans are attacked by a shrieking alien monster. They are overwhelmed until only Robin and Starfire remain able to fight. They defeat the monster, and whilst they congratulate each other, Cyborg teases Robin about his and Starfire's relationship by calling Starfire his girlfriend. Robin becomes both shocked and embarrassed at the suggestion and starts to hyperventilate. He also notices that everyone (minus Raven) have smug looks on their faces revealing that they are all fully aware of how Robin and Starfire truly feel about each other. Still embarrassed, he yells "SHE'S NOT MY GIRLFRIEND!" which shocks Starfire so much that she falls to the ground. She becomes confused and very angry, but as Robin starts prepare himself from some uncomfortable questions from her, they hear a loud shriek: the alien monster is revealed to have survived the fall and starts to destroy the station. The Titans are able to escape the station before it explodes, but the monster eventually causes them to land separately on an alien planet.

After landing, Robin starts to look for the others, and he comes across Starfire's pod first. Inside it, however, he finds a slug creature. Believing the monster to have done something to Starfire, Robin attacks it, but its slimy body makes it difficult for him to fight and it almost eats him. Luckily, Robin is saved by Starfire. He runs towards her, relieved that she's alright, but to his surprise Starfire doesn't act like her usual self; stand-offish and indifferent. Starfire then says they should start looking for the others, and for the most part, ignores Robin. While searching for the others, Starfire keeps moving away from Robin every time he gets to close to her. Starfire reveals she is giving Robin "the space" as he requested back at the station, which reveals to Robin that Starfire is still hurt. She suggests that they would have better luck looking for the others if they split up, Robin however is against the idea and asks if she could just talk to him. Star asks him if he is finally ready to explain why she isn't his girlfriend. This makes Robin nervous which makes Starfire go back to ignoring. Later, Robin almost falls into a lava-pit, but is saved by Starfire. Despite this, Starfire continues ignoring him. Thinking she has misunderstood what girlfriend means on Earth, Robin starts to explain, but to his surprise Starfire is revealed to already be aware of what girlfriend means. Robin and Starfire soon find themselves on different parts of the mountain and the ground beneath them breaks apart and the two of them end up falling, Robin is able to save himself, but to his surprise, Starfire reveals that she is unable to use her powers. Robin jumps down to save her and the two of them land safely in a cave. Now that they are safe, Robin asks Starfire why she was unable to use her powers to save them, and she reveals that her powers are connected to her emotions. She can't fly or shoot star-bolts is because she was upset and started to fear that their relationship won't be the same; since he won't admit how he really feels about her. Robin starts to explain how he really feels about her, albeit somewhat awkwardly. He says that "It's awesome the way [she] shoots starbolts." and that "It's cool that [she's] brave and the strongest girl ever". Starfire asks him if he doesn't mind having a girlfriend, but before Robin can answer her they are suddenly attacked once again by the monster. As they fight, Starfire regains her powers. They are cornered onto the edge of a cliff, and with no way of escape Robin says it's time to fly, Starfire is nervous, but Robin reassures her by taking her hand and telling her as long as they're together, it will be okay. They both jump off the cliff and Starfire regains her flight abilities. They safely fly to the top of the mountain, look into each other's eyes and with Starfire having forgiven him, they share a hug.