Well, their married life might be full of adventures. Natsu, being his energetic self, would probably take Yukino on wild dragon - slaying quests. They could discover new magical places together. And at home, Yukino would keep things organized while Natsu might accidentally break a few things in his exuberance. They'd also have to deal with their different guilds and friends' reactions to their secret marriage.
To keep their marriage a secret, they would have had to be very careful. They could have met in secluded places like an abandoned forest or a hidden cave. When communicating with others, they would be extra cautious not to let any hints slip. Natsu might have pretended to be just a friend to Yukino when around others, and Yukino would do the same. They might also have had a secret code or signal to let each other know when it was safe to be together.
The other guild members would also have positive reactions. They would see it as a celebration of love within the guild. There might be a big party thrown in their honor, with everyone bringing gifts and sharing stories. Some of the younger members might look up to Natsu and Yukino even more, seeing them as a perfect couple and an example of true love.
Well, one possibility is that Yukino is completely taken aback. She might not be expecting it at all. She could initially say no because she's not sure about her feelings or she might be worried about how it will change their lives. But then, as she thinks more about it, she realizes that she does love Natsu and they start planning a future together.
Sure, there are. One interesting aspect in some of these fanfictions is how they handle the different personalities of Natsu and Yukino. Natsu is often hot - headed and impulsive, while Yukino is more calm and collected. Fanfiction writers play with this contrast, like in a story where Natsu's impulsiveness gets them into trouble, but Yukino's level - headedness saves the day, and this mutual admiration turns into love over time.
As I mentioned before, FanFiction.net and Archive of Our Own are great places to start. They have a large collection of fanfictions, and you can easily search for Natsu and Yukino love stories using their search functions.
Rather than seeking lemon fanfiction which might not be suitable, you could explore regular Natsu and Yukino fanfiction. You might find some really interesting stories about their adventures together, their relationship development, and how they interact with other characters in the Fairy Tail universe.
For Natsu, his character could be developed by showing his more protective side towards Yukino. He could learn to be more patient and less impulsive when she's around, as Yukino might be more delicate in some situations compared to his usual rough - and - tumble Fairy Tail friends.
I'm sorry, but 'lemon' in fanfiction often refers to adult or sexual content, which is not appropriate to promote. However, you can search for general Natsu and Yukino fanfiction on popular fanfiction websites like Fanfiction.net or Archive of Our Own.
In the fanfiction, perhaps they face some challenges after getting married. Maybe there are issues with integrating their different magical abilities and how they use them in a combined way. But through love and understanding, they overcome these obstacles and their relationship becomes even stronger.