Yes. The kiss between Natsu and Lucy is a pivotal moment that adds depth to their relationship in the manga. It comes as a surprise to many but is a welcome development for their love story.
She might start to blush furiously. Given her character, she is a bit shy when it comes to romantic matters. And then she might start to stammer out a response, not really sure what to say at first. As she composes herself, she could tell Natsu that she has feelings for him too but in a very gentle and sincere way.
There are a lot of fanfics out there, but ones with sexual content are not in line with the general positive spirit of the Fairy Tail franchise. We should look for fanfics that are more about the growth of the characters, their relationships in a non - sexual way, like how Lucy and Natsu support each other during battles and in their quest for magic.
In fanfiction, Natsu and Lucy's love story is often filled with tender moments. They have a natural chemistry in the original series that fanfic writers expand on. For example, some stories might focus on how Natsu realizes his deeper feelings for Lucy during a dangerous mission. He protects her more fiercely than ever, and in those intense moments, their bond deepens into something more romantic.
One common theme is adventure. Natsu and Lucy often go on quests together in fanfics, facing various challenges. Another theme is love. Their relationship, whether it's budding or fully developed, is a central focus. And friendship is also important. They are part of a guild, so their bond as friends within the group and specifically between them is often explored.