A theme that often pops up is the idea of growth. Heartbreak can be a catalyst for Natsu to grow as a character. He might become more empathetic or learn to be more cautious in relationships. Also, the theme of forgiveness can be present. He may have to forgive the person who caused his heartbreak to move on.
One popular 'natsu gets heartbroken fanfiction' could be 'A Broken Heart's Journey'. It delves into Natsu's emotional turmoil after a betrayal from a close friend. The story shows his struggle to come to terms with the pain and how he gradually tries to heal.
One possible reason could be unrequited love. Maybe Natsu has feelings for someone who doesn't feel the same way about him. This could lead to his heartbreak as he realizes that his love is not reciprocated.
He might isolate himself at first. Natsu could withdraw from his friends and normal activities, needing time alone to process his pain. This is a common way for people, or in this case, characters, to deal with heartbreak.
A great natsu heartbroken fanfiction is 'When Natsu's Heart Broke'. It explores a situation where Natsu is deceived by someone he trusted, leading to his heartbreak. The story is full of his internal struggles and how he tries to move forward.
Create a strong backstory for the heartbreak. Maybe it was a long - building relationship that suddenly fell apart. Use vivid descriptions of Natsu's feelings, like 'Natsu felt as if his heart had been ripped out, leaving a gaping hole in his chest.' Also, show his attempts to overcome the heartbreak, which can make the story more engaging.
He could marry an original character created specifically for the fanfiction. This character could be a powerful mage from a far - off place who crosses paths with Natsu during one of his adventures.
One of the senior and more experienced members of the guild. They have seen a lot and know how things should be done in the guild. If Natsu acts in a way that goes against their long - established ways, they would not hesitate to berate him.
Definitely Lucy. Their bond is so strong that if there were any cracks in it, like if Lucy started distancing herself from Natsu without a clear reason, it would be devastating for him. Gray is also a candidate. They've been through so much together, and if Gray were to say or do something really hurtful, like blaming Natsu for a big mistake that wasn't his fault, it could lead to heartbreak. Juvia might be involved too. If she tried to keep Lucy away from Natsu for her own love for Gray, it could cause problems for Natsu and lead to his heartbreak.