Winter Widow

Winter Widow is the het ship between Natasha Romanoff and Bucky Barnes from the Marvel Cinematic Universe fandom.

Comics
While under the control of the Soviets, Bucky helped train Natasha at the Red Room Academy, and they fell in love. He often snuck into her room sleeping quarters to see her. Their relationship began to break down his Winter Soldier programming. As a result, they were forcibly separated from each other, and Bucky was put back into cryostasis.

Fifty years later, they were reunited and rekindled their romance. Eventually Natasha was captured and her memories were altered. Bucky is able to rescue her and retrieve her old memories, but the ones of their relationship were erased.

Marvel Cinematic Universe
The Winter Soldier attacked and shot Natasha while she was escorting a nuclear engineer out of Iran. She searched for him after the incident, but found nothing.

Five years later, she fought against the Winter Soldier in Washington, D.C. alongside Steve Rogers and Sam Wilson. He shot her a second time.

She fought the Winter Soldier a third time two years later at the Joint Counter Terrorist Centre Building in Berlin. As he strangled her, she asked him to recognize her.

Captain America: The Winter Soldier

 * Natasha tells Steve that she'd encountered the Winter Soldier once before, and he'd shot her.

Captain America: Civil War

 * Natasha and Bucky fight while he's under brainwashing. She asks him if he could recognize her.
 * Bucky takes Natasha's gun in Siberia. He keeps it, as seen in Avengers: Infinity War.

Fanon
As the ship is comic-canon, many fans would like it to be in the MCU as well. Otherwise, fans like the ship because of their involvement in the Red Room, as well as the way their personalities interact. Natasha is portrayed as stoic and Bucky is portrayed as a man not to be crossed.

Many fans speculate about one of Natasha's lines in Civil War. She and Bucky fight against each other while he is in Winter Soldier mode. As he is strangling her, she says to him, "You could at least recognize me." Fans usually interpret this to mean that Bucky helped train Natasha in the Red Room as he did in the comics.

On AO3, Winter Widow is the second most written ship for Natasha and the fourth most written for Bucky.

Fandom
FAN FICTION
 * Bucky/Natasha (Captain America Trilogy) on FanFiction.Net
 * Bucky/Natasha (Avengers MCU) on FanFiction.Net
 * Bucky/Natasha (Avengers: Earths Mightiest Heroes) on FanFiction.Net
 * Bucky/Natasha (Marvel Comics) on FanFiction.Net
 * Bucky/Natasha (Marvel Comics) on FanFiction.Net

TUMBLR

Trivia

 * Natasha is one of the few people to call Bucky by his first name, James.
 * On Earth-555326 Natasha's son is named after Bucky.

Variations

 * StuckyNat refers to the ship between Steve Rogers, Bucky, and Natasha
 * WinterIronWidow refers to the ship between Bucky, Tony Stark and Natasha
 * WinterWidowHawk refers to the ship between Bucky, Natasha and Clint Barton