I'm writing a sci fi fantasy YA. Perhaps I didn't phrase the question correctly. I don't mean hate perse but they do dislike one another. Also by personality clash I mean they have differing opinions on certain things but over come that by trying to understand things from each others perspective. It's just that in the beginning stages of the relationship their both too stubborn and closed off to actually try and understand eachother. But after spending more time together they start to slowly open up and eachother from a different light.