One common theme could be friendship tested. Maybe there's a situation where Ron and Harry have a big fight and it leads to crying as they realize how much they mean to each other. Another theme might be loss, like the loss of a mutual friend or a situation where they think they're going to lose each other.
I'm not sure of specific 'ron x harry crying fanfiction' titles off - hand. But you can try searching on fanfiction websites like Archive of Our Own. There are likely to be many stories in that pairing that might have emotional or crying scenes.
One possible reason could be a misunderstanding in the fanfiction. Maybe Ron said something stupid or insensitive, like in the original series where he sometimes had a hard time expressing his feelings properly. This could have deeply hurt Hermione, leading to her crying.
One popular 'ron x little harry fanfiction' could be 'The Bond Beyond Hogwarts'. It explores their relationship in a post - war scenario where they rely on each other more than ever.
Friendship is a big one. Since they start as friends, many fictions explore how that friendship can be the foundation for a deeper relationship. Another common theme is loyalty. Their loyalty to each other in the original series is often expanded upon in fanfiction.
In 'harry x ron lemon fanfiction', one possible theme could be the discovery of hidden desires. As they've been through so much together in the wizarding world, there might be a theme of finally realizing that there are deeper feelings beneath their friendship. Another theme could be the struggle with identity, as their relationship takes on a new form. They might have to deal with how others in their world view their new relationship. And of course, there could be themes related to the power of love and how it can change and shape their lives in unexpected ways.
One great 'ron x harry fanfiction' is 'The Bond Beyond Friendship'. It beautifully explores their relationship in a new light, adding depth to their friendship and hinting at something more. Another is 'Ron and Harry's Unseen Adventure' which takes them on a journey where they discover new aspects of their connection.
Well, Archive of Our Own is really the best for finding 'ron x harry fanfiction'. It not only has a large quantity of stories but also a very active community of writers and readers. You can also check out Tumblr. Sometimes bloggers share links to their favorite 'ron x harry' fanfictions or even write their own short pieces and post them there.
Some fanfictions also explore the theme of growing up. Harry and Ron go through a lot of changes as they age in the original books, and fanfic authors often expand on this, showing how their relationship evolves as they become more mature and face different challenges.