All couples fight but however successful couple do it differently.
Couples who stay for long do not shy discussing the big, scary questions as soon as possible for ex what are we going to do if you get that job in another state? When are we going to have children? I don’t want to move to another city, so they don’t become bigger issues in the relationship in the later stage. When taboo topics remain unaddressed, they can turn into a big problem which could have been avoided in the first place.