Well, some of them might be really surprised. Tony, for example, would probably crack a lot of jokes about Steve being young. He might say things like 'Cap, you were this cute little thing?' Natasha, on the other hand, would be more observant and start thinking about how this new information could be used in future strategies. Thor would probably just laugh heartily and pat Steve on the back, saying something like 'Tis an interesting discovery, young Steve!'
Steve would probably be quite honest. He might just come clean and start sharing his experiences as a young man. He'd want the Avengers to understand that he's still the same person at his core.
The Avengers might be initially shocked. For example, Iron Man could start by using his technology to find ways to help Hawkeye communicate better within the team. He might create special devices for him.
The Avengers would likely be overjoyed. Tony might crack a joke about Coulson's 'resurrection' while also being secretly relieved. Steve would probably be very happy to see his friend again. Natasha might be a bit more reserved in her reaction but still glad. Thor would see it as a great sign and welcome Coulson back heartily.
Well, it could potentially strengthen the bond within the Avengers. They are a family of sorts, and if Steve is gay, they would accept him wholeheartedly. They've faced all kinds of differences before, like Thor being an Asgardian. This would just be another aspect of Steve that they'd embrace, and it might even make them more united in the face of any external judgment.
Tony Stark would probably be both proud and a bit worried. Proud because Peter is this brilliant young mind who has managed to be a hero on his own, but worried because he's just a kid. He might start to hover over Peter more, offering him better tech and trying to mentor him more closely. Captain America would likely be very accepting. He sees the good in people and would be happy to have another brave soul on the team. He'd probably offer Peter some words of wisdom about using his powers responsibly. Thor might be a bit clueless at first. He doesn't quite understand the whole 'secret identity' thing as well as the others, but once he gets it, he'd be all for having Peter around. He might see Peter as a little warrior and be eager to train him in his own Asgardian ways.
With the Avengers finding out Steve is gay, his relationships would evolve. For instance, Sam Wilson would be extremely supportive. He and Steve already have a great friendship, and this would only add another layer to it. Steve's relationship with Bruce Banner might also change. Bruce, who often feels like an outcast himself, could relate to Steve on a different level. They might have more in - depth conversations about acceptance and self - identity. And Steve's connection with Rhodey could strengthen as Rhodey is a man of honor and would respect Steve no matter what. Overall, Steve's relationships with the Avengers would become more multifaceted and based on a deeper understanding of one another.
One possible reason could be memory alteration. Maybe some villain has the power to manipulate memories and has erased Steve from the Avengers' minds. This would create an interesting plot where Steve has to find a way to make them remember him again.
Some Avengers might be protective. For instance, Captain America could immediately start giving Peter advice on how to better handle his dual identity and keep himself safe. He might offer training sessions to help Peter improve his skills as Spider - Man.
Some Avengers would be happy. Like Thor, he would laugh heartily at the fanart that makes him look like a big, friendly giant. In fanfiction, if he's depicted as a noble and powerful being, he'd be all for it. Black Widow might be more skeptical. She'd analyze the fanart and fanfiction carefully to make sure it doesn't give away any secrets or misportray her. She might be okay with the fanart that shows her in a sleek, stealthy way.
Well, Thor would likely be deeply pained and determined to make it up to Loki. Natasha would be very observant and start to analyze Loki's behavior in a new way. Bruce might be a bit hesitant at first but then try to offer his help in a gentle way. They all would have different reactions based on their own personalities and experiences.