So I have 2 boys age 15 and 8. Me and my fiance are supposed to get married 10/13/18. My 15 year old and my fiance do not get along and my fiance has said if things don't change with his behavior we will not get married. Shouldn't he be my side no matter What? Good and bad? Im very sad over this so called probation period that i cant even be excited about planning our wedding. He is not even that bad a kid. He makes good grades he just has a really bad attitude(That he gets from his loser dad). I'm torn.