Black Widow/Relationships

Clint Barton
Clint and Natasha are best friends. However, at the start of their relationship, Clint Barton (as Hawkeye) was sent to eliminate Natasha, but instead, Barton saw her skills and recommended her recruitment. The two began an everlasting partnership, with Barton affectionately calling her "Nat."

During The Avengers, Barton was taken by Loki Laufeyson, while being under his mind control. When she heard he was in danger, she immediately beat up her interogators. Loki later saw their relationship as friends, and even threatened to have Hawkeye kill her and when he would awake in horror, Loki would then kill Hawkeye. Natasha was forced to fight him, but she was able to knock him out and they both quickly apologized.

It is revealed that Natasha is close to Clint, his wife and their three children.

During the Civil War, Clint and Natasha's relationship was briefly strained because Nat joined the Iron Man side while Barton joined Captain America's team. In Avengers: Endgame, Natasha sacrifices herself on Vormir for Clint not only because she knew her own death would give him the Soul Stone to help undo the Snap but because she knew his family needed him.

Captain America
Natasha is good friends with Steve Rogers, AKA Captain America. The two of them became very close friends over the years. They usually never go on a romantic level, but Natasha does understand Steve on a level. When they were undercover, she told Steve to kiss her, but it didn't really mean anything, as they just see themselves as siblings. In Age of Ultron, Steve also notices that Natasha and Bruce were in love with each other.

During the Civil War, Natasha sided with Iron Man's faction, putting a strain on her relationship with Steve. However, she did still care about Steve, even switching sides, allowing them to escape while stalling Black Panther. knowing full well that she was risking her freedom, and her life.

Later, in Avengers: Endgame, Natasha comforts Steve with the fact that whatever it is their planning will work. He is deeply sadden by her death, and decides to mourn her with the rest of the team. At that moment, Steve admits Natasha was family and that she believed it in return.

Bruce Banner
Natasha first met Bruce when she was recruiting him for the team in the Avengers. She was afraid of him, especially when he was in his Hulk form. She brought a gun out when she thought he was going to have a major outburst.

It was revealed in Age of Ultron, that Bruce and Natasha both had romantic feelings for each other. Since she was in love with Hulk, Natasha was no longer scared by him. By then, Natasha was the one who was able to get to Hulk by reciting a small statement. When Natasha was kidnapped by Ultron, Bruce was worried about her and saved her. When he was in the Quinjet, Natasha tried to get to him, but Banner immediately discharged her call.

When the reunited in Avengers: Infinity War, they were both cordial, yet awkward towards another.

After Natasha's death, Bruce tried everything to bing her back with the Infinity Stones; however, it didn't succeeded.