They could start as rivals. Maybe they are both vying for a top position in S.H.I.E.L.D. or in a new superhero alliance. As they compete, they begin to see the value in each other's skills.
A great way to develop their relationship is through a shared mission. For example, they are sent to stop a new threat that requires both of their skills. During the mission, they have to trust each other. Captain Marvel might be used to working alone in space, while Black Widow is used to team - based espionage. They learn to adapt to each other, and this could lead to a friendship or even a sisterly bond. Black Widow could open up about her past traumas to Captain Marvel, and Captain Marvel could share her experiences of being away from Earth for so long.
In fanfiction, their relationship could develop through training sessions. Captain Marvel could offer to train Black Widow in using her powers more effectively if she has some, or in combat against super - powered foes. Black Widow could in turn teach Captain Marvel about human - level combat skills and stealth. Through these interactions, they grow closer and start to rely on each other not just in battle but also in their personal lives.
One idea could be that Captain Marvel and Black Widow are on a mission together to infiltrate a powerful and secretive organization. They have to rely on each other's unique skills, with Captain Marvel using her super strength and flight to get them in and out of tight spots, while Black Widow uses her espionage expertise to gather intel.
In the fanfiction, their relationship could be complex. They've been through so much together as comrades in the Avengers. As parents, they might have different parenting styles. Captain America could be more open and idealistic, while Black Widow is more cautious and practical. But they both love their child deeply and work together to keep the child safe from the threats that come from their superhero lives. For example, when the child wants to join a mission too early, they have to work out how to handle it as a couple.
In fanfiction, their relationship could start with a misunderstanding. For example, Peter might accidentally interfere with one of Captain Marvel's missions thinking he's helping. This could lead to an initial tension. But as they talk it out, they realize they have a common goal of protecting the innocent. They then start to trust each other more and more, and eventually become friends who rely on each other's unique skills in battles.
Their relationship can be developed through shared experiences. For example, going through tough battles together. In a fight against a powerful villain, they might start to rely on each other more and more, gradually building trust.
Yes, in the Marvel universe, Captain America and Black Widow have a comrades - in - arms relationship. They fight side by side in many battles. Their relationship is based on mutual trust and respect within the Avengers team.
Another concept could be a time - travel fanfic. Black Widow somehow gets sent to a time when Captain Marvel was just starting out as a hero. Black Widow then has to train the younger Captain Marvel and help her unlock her full potential while also trying to find a way back to her own time.
They are comrades. They both fight for the Avengers and for the protection of the world. They respect each other's skills and abilities and work together in many battles.
Their relationship could be developed through shared danger. For example, if they were trapped in a collapsing building during a mission in Budapest, they would have to rely on each other to survive. This would strengthen their bond of trust.
It can start with mutual respect. Spiderman admires Black Widow's experience and skills, and she respects his unique abilities. They could have conversations during missions where they share their thoughts on heroism and sacrifice. This would gradually build a connection between them.
A prevalent theme is also power dynamics. Captain Marvel has immense superpowers, while Black Widow is a highly - skilled human. Fanfictions often play with how these different power levels interact. For example, they might face a situation where Captain Marvel's powers are nullified, and Black Widow has to step up and protect her, reversing the expected dynamic. Additionally, redemption and self - discovery are themes. Both characters have complex pasts, and fanfictions can explore how they help each other come to terms with their past actions and grow as individuals.