Some might turn to self - destruction. They could start abusing drugs or alcohol to numb the pain of the guilt. But this is a very negative way to cope.
One possible reason could be a fit of extreme rage or jealousy. Maybe there was a long - standing feud over something like a love interest or a business deal that got out of hand. For example, if they both fell in love with the same person and the competition turned bitter.
It's extremely difficult. Some might turn to religion, seeking forgiveness through prayer and penance. They might believe that by atoning in a religious way, they can find some peace.
It could be due to a sudden fit of rage or jealousy. Maybe there was a fight over something really important like a girl or money. It's a really sad situation.
You can make it unique by highlighting a rare or difficult situation you both overcame together. So a title like 'Surviving the Storm: My Best Friend and I' would be good. It could be about how you supported each other during a natural disaster or a personal crisis that not many people experience.
One possible challenge is that your friend may not feel the same way. This could lead to an awkward situation and might even strain your friendship. For example, if they see you only as a friend, they may start to distance themselves from you because they don't want to give you false hopes.
Trust is a key element. In a best - friend story, like when one friend shares a deep secret and the other keeps it safe. Another is support. Just like when your friend stands by you during tough times.