A popular one is 'New Beginnings'. Here, the story focuses on how Hermione copes with Ron's betrayal and how Draco enters her life at that crucial moment. It shows a different side of the Hogwarts world and the characters, with their relationships evolving in unexpected ways.
Well, it definitely makes things more complicated. Ron would probably be very confused and angry at first. He might see Draco's actions as a form of interference or even an insult. He may think Draco has some ulterior motives towards Hermione.
Well, in some versions, Ron might use his quick wit and knowledge of Hogwarts' secret passages to outmaneuver Draco. He could lead Hermione to safety through a passage that Draco doesn't know about.
The relationship could take a very different turn. Ron might become extremely jealous, especially if he has feelings for Hermione. This jealousy could lead to him lashing out at Hermione and even trying to drive a wedge between her and Draco. Hermione, in turn, might be frustrated with Ron's immaturity and start to distance herself from him. But if they are able to communicate effectively and Ron realizes his jealousy is unfounded, they could start to rebuild their relationship on a more mature and understanding basis.
Draco might be motivated by jealousy. He could be jealous of Ron and Hermione's friendship or a possible romantic relationship between them. So he tries to harm Hermione out of spite.
One possible reason could be that Draco has had a change of heart. Maybe he realizes that Hermione is a person worthy of protection regardless of her House or her friendship with Ron. He might have seen some injustice about to befall her from Ron and his Gryffindor bravado getting out of hand.
It can make Hermione seem more rebellious. In canon, she's with Ron, so in this fanfiction scenario, her leaving Ron for Draco shows that she's willing to break away from the expected and follow her own heart, even if it means going against her friends' expectations.
One common theme is the exploration of forbidden love. Since Hermione and Ron are a couple in the original story and Draco is an 'enemy', the idea of them getting involved is seen as forbidden. Another theme could be self - discovery. Hermione might be written as realizing new aspects of herself through this unexpected relationship.
In this kind of fanfiction scenario, Ron might be in a tough spot. On one hand, he trusts Hermione, but on the other, Draco is an old enemy. He could be the voice of reason among his friends, trying to calm down those who are quick to assume the worst. He might start researching in the library or asking older wizards for advice on how to deal with a spell - stuck situation between Hermione and Draco, all while dealing with his own mixed emotions.
Yes, there are some fanfictions out there on this topic that are quite well - written without crossing any inappropriate lines. Some authors use this as a creative exploration of different character dynamics, often delving into how the relationships could change under different circumstances.