Well, in the 'my fiance is in love with my sister novel' context, another option could be to talk to my sister. Maybe she is also confused or unaware of the depth of the situation. By communicating with her, I could find out if she has any feelings for my fiance and try to resolve the issue together.
They're appealing because of the built - in conflict. Having a fake relationship means there are a lot of lies and secrets that can create drama. For example, when the characters' families get involved, it can be really exciting.
Well, it's a complex situation. You could also talk to your sister. She might not be aware of your fiance's feelings and might be able to help resolve the issue. If your fiance truly loves your sister, it might be better to end the engagement rather than living in a relationship full of tension and unfaithfulness.
Well, first of all, it's a tough situation. In a fanfic world, things can be really complex. If I were in this situation, I might try to have an honest conversation with both my fiance and my sister. I'd want to know exactly how they feel and why this has happened. Maybe there was some misunderstanding that led to these feelings.
It could be someone completely new, a character created just for this fanfic. Maybe he's a normal villager who has a kind heart and fell in love with Sakura when he saw her helping people in the village. He doesn't have any ninja powers but he has a great sense of humor and that's what attracted Sakura to him.
The character could also choose to distance herself from both the fiance and the sister for a while. This gives her time to think clearly without the immediate emotional turmoil of their presence.
One way to cope is to write down your feelings in a journal. It can be a great way to sort out your thoughts and emotions. Also, try to limit your contact with your fiance until you figure out what to do. Regarding your sister, be open and honest with her if you can, but don't blame her for your fiance's feelings.