Hey all, I have two characters in my WIP that I would like to have had a past feud of some sort. Both characters have quite contrasting personalities, but enough interests in common (e.g, hobbies and a mutual friend or two) to give them something to argue over. I can't - for the life of me - seem to think of a good way to make two contrasting characters have a feud that could be resolved down the line as the plot develops. I do have a great affection for both characters, so I think there is a genuine fear of making the characters too problematic and immoral that makes it difficult to walk back as a writer and create a redemption arc. So I ask, how do you guys come up with an engaging point of conflict that would make a reader understand both sides of the argument, and reach an inevitable resolution?