On the other hand, Steve might be more understanding than expected. He knows about Bucky's past traumas and could suspect that something else is at play. So, instead of immediately resisting, he might play along for a while, waiting for the right moment to figure out what's really going on and how to help Bucky.
The kidnapping could be a turning point in their relationship. They might start to see each other in a different light. Steve could see Bucky's desperation and the lengths he would go to protect him, even if his methods were wrong. Bucky, on the other hand, could realize how much Steve means to him through the guilt of kidnapping him. This could lead to a more intimate and emotional bond between them as they work through their issues together.
The Avengers' reactions would be diverse. Captain Marvel, if she's part of the group, might be very matter - of - fact about it. Rhodey could be a bit bemused. Steve and Bucky, in the meantime, would be dealing with the embarrassment of being caught in what might be a very personal moment. The situation could also lead to some new conversations within the Avengers about personal boundaries and relationships among the team members.
In some fanfics, it might be justified in a complex alternate universe scenario. Maybe Bucky is mind - controlled in a way that's extremely difficult to break, and he's forced to act against Steve. However, this goes against the deep - seated friendship between them in the main canon.
In some fanfics, Bucky might be written to hate Steve due to misinterpretations or plot twists. Maybe the writer wants to explore a darker, more conflict - ridden relationship. It could be that Bucky has been brainwashed in the fanfic and his altered mind now sees Steve as an enemy, or there could be some past event that was misconstrued and led to this hatred.
A great Steve Bucky fanfic often has a strong focus on their relationship. It could be their friendship or something more, but it should be well - developed. For example, it might show how they support each other through tough times. Good character development is also key. The fic should stay true to the personalities of Steve and Bucky as we know them from the source material.
Another common theme is loyalty. They are extremely loyal to each other. In some fanfics, they'll go to great lengths to protect one another, even if it means going against the whole world. It's a very powerful aspect of their relationship that writers often explore.
One great Bucky x Steve fanfic is 'A New Beginning'. It delves deep into their relationship post - Avengers events, exploring how they reconnect and heal together. The characterizations are on point, making it a very engaging read.
He could also be very angry. If he feels blindsided by the break - up, he might lash out at Catherine. He could accuse her of leading him on or not being honest about her feelings all along, and this anger could be his way of dealing with the pain of the break - up.
He might become very withdrawn. He could stop going out with friends and just stay at home, feeling sorry for himself.
It could also be strained. There might be some jealousy or differences in opinion on how to handle the situation. For example, one of them might want to be more involved with the girl during the pregnancy while the other feels left out, which could cause some tension between them.