ok so here's a hypothetical situation. let's say your writing a story and, and you decided to ask your friend for help. at first it goes well, he pitches some suggestions, you compare your own, your both just having fun with it. and then one day you get into a huge argument with him over how to write it. it's so bad that you stop being friends and kick him off the team. years later you get your book published and it's doing really well, but all of sudden your "friend" shows up demanding compensation, because some of the things so wrote in your book are similar to things he suggested. the things he suggested are very broad, storytelling elements. if what he says is true do you owe him anything at all? or can you just ignore him?