Unforbidden Love

Ever since they were young they hated each other their families were great friends but no they would kill each other if they could even if their parents would say no to that. They eventually would grow up to become the worst of enemies always fighting over something that would get their mafia one point up then the other their family doesn't agree with this but they just want to see what happens. But always one of them wins the other one would lose and that would piss off the other one now it's the point of time they are standing in the rain. Their guns to each other heads about to shoot but no one to stop them and nobody to even cares that they would kill each other completely. When they shot each other they both died that day and the next day they would both wake up in another world where they are engaged and right now in a bed together. But the thing is they are different people but they still are part of a Mafia but this Mafia had called truths but these two haven't and are willing to kill each other. Will they be at each other throats? Maybe just make-up? no one knows and I wonder if you could tell me...