Gale later moves to District 2, where he secures a "fancy job" working for Panem's new government. Katniss finds herself relieved by this instead of feeling any longing or anger, as she herself believes that Gale will forget her and will soon be "kissing another pair of lips."
Katniss, unable to look at him the same way, lets him walk away without a word and eventually ended up living with Peeta. Shortly after, Gale moved to District 2 where he got a job with Panem's new government. It was stated that Gale was eventually promoted to a captain for the purpose of security and keeping order.
In the end, Katniss and Gale grew apart, as many childhood friends and young loves do. She needed something different in her life, and with Gale's link to Primrose's death, Katniss found a reason to cut ties. If Katniss ever wanted to find comfort again, she knew she had to return to Peeta for the long term.
Prim was among the medics who arrived to treat the victims. Unfortunately, a second batch of bombs were set off, with Prim being killed in the explosions. Gale was not the one to drop the bombs from the hovercraft, but he was one of the key figures to devise the strategy of double bombings.
The Life of Gale Hawthorne: Transformation Explained (Hunger Games Breakdown)
Who killed Prim Hunger?
Before the Capitol battle, Gale had explained to Katniss his series of bombs designed to feed off human compassion: a small bomb would go off, and then when medical aid rushed in, a second bomb would go off, killing those people as well. Incidentally, it's this exact type of bomb that took Prim's life.
In the end, Katniss and Gale grew apart, as many childhood friends and young loves do. She needed something different in her life, and with Gale's link to Primrose's death, Katniss found a reason to cut ties. If Katniss ever wanted to find comfort again, she knew she had to return to Peeta for the long term.
Although she will never know for sure, Katniss does recognize that she cannot be with Gale. She will never be able to forgive him for his idea — the parachute bombs — that killed Prim.
Peeta, Annie, and Beetee vote no, while Johanna and Enobaria vote yes. After some thought, Katniss demands to kill Snow. Once she receives an agreement, she votes yes, for Prim. Realizing something is up (as Katniss would never do that), Haymitch votes yes, too.
Gale does not marry anyone in The Hunger Games. He and Katniss talk about running away together and starting a new life in the wilderness, but they never officially marry.
Essentially, Katniss was afraid that if she was to kill President Snow, then the whole revolution fails, and the rivalry would still continue. Therefore, Katniss had to sacrifice by killing Coin in order to end war, and knew that Coin couldn't do anything better than Snow to save the Panem.
She later realizes, after a conversation with the imprisoned President Snow, that President Alma Coin sent Prim to her death (which was caused by a hovercraft by the rebels) both to sway the Capitol citizens to Coin's side by making them think Snow was bombing the children, and to swing Katniss to her side through the ...
According to the star behind Effie, Elizabeth Banks, she and Haymitch's Woody Harrelson improvised the scene. Considering she's been adamant about the characters having some romantic connection, it only makes sense that they'd share a goodbye kiss. It's very on-brand for Effie, as well.
What happens to Haymitch at the end of Mockingjay?
Later life. After the Second Rebellion and Panem's transition into a democratic republic, Haymitch, alongside Peeta and Katniss, return to Victors' Village in District 12, where they remain as the district is rebuilt around them.
He knew something was seriously bothering Katniss because she had come to ask for his advice. But his 'boy troubles' comment put her off. So when he said 'I'm with the Mockingjay' it meant that he trusted that the Mockingjay (as the face of the rebellion) would do the right thing for the cause they had both fought for.
Thankfully, Katniss noticed the clues. President Alma Coin presented herself as Panem's salvation in The Hunger Games, but several moments in Mockingjay hinted that she was an even worse villain than President Snow.
Peeta decides, though, that he will go out on his own to act as a diversion in case Katniss and the others need it. Gale gives Peeta his nightlock pill in case Peeta's captured. They leave early in the morning, bundled up and styled by Tigris. Cressida and Pollux go first, leading the way to the City Circle.
Katniss speculates that Coin deliberately sent Prim to die in the Capitol bombing in order to fully gain her trust, but it's never outright confirmed or denied.
Katniss's focus on survival and her family's safety prevented her from fully considering romance, but her feelings for Peeta and Gale diverged in the end. Katniss ultimately chose Peeta because he understood her trauma and she didn't want to lose him, proving her love for him.
When Katniss comes home to District 12, Gale immediately confesses his love for Katniss, and she realizes she might have feelings for him, too — but she can't explore them, because she has to continue her fake relationship with Peeta or else her entire family, including “cousin Gale,” will be killed.
It's only implied that they get it on via snuggling and other affectionate acts in close quarters — but if you have read the book, they really imply that they took their relationship to the next level.
“When Katniss says to Gale in their goodbye scene, 'You can't protect anyone in an arena,' the arena has always been the metaphor for war. And innocent people suffer in war.” @posthungergamessyndrome: I hadn't even begun to unpack that line.
