Why is my love life with a female tiger found down the drain?

I'm a scorpio ox man born 1973 and my fiancé is capricorn tiger girl born 1975 .why lately me been arguing over little things . We r both stubborn we won't give up but overall love each other dearly. I'm not the type to let a girl win either. What should we both do - me and what about her too?she we split or keep trying cause we both afraid what future holds for us . this seems like a hard divorce. thanks