People break up for many reasons.
There are as many reasons as there are people on this earth.
Some can forgive an affair at a Christmas lunch whereas others would end the relationship immediately.
You need to be honest with yourself when examining your relationship.
If you communicate well with one another you already have an advantage over many other married people.
Once criticism is taken personally, you lose the ability to correct behavior, and you lose the all-important possibility of forming one another.
Like the top cover of a toilet seat.
Some men have a tendency to leave it open and others like it closed.
It can be very destructive in a relationship to avoid talking about such little details.
Occasional slip ups can happen, but if something really annoys you, you owe it to your relationship to say so.
Thinking your marriage problems only revolve around sex would be to take the easy road.
Once people have found one another they have mutual ground in that area.
Focusing on sex alone won't cure the other problems which could be along the lines of:

• Bad finances - maybe old debts
• Wrong job - stress, frustration or maybe new passion for another job
• Kids having problems in school, kindergarten etc
• Parents-in-law
• Other family members divorcing

In the last instance, the occurrence of a divorce in your immediate family can make you both insecure.
You don't have any reason to let it effect you, but it's highly natural to be stressed a bit once statistics become news around you.
Much of it happens without you even consciously noticing it.
Likewise, economic troubles can be very hard on your relationship.
You must build a plan on how to overcome your bad financial situation to bring an end to such troubles.
If you can't cure such things, how would you ever handle problems with your kids or a sudden need for your uncle to get a donor kidney? Communication Is A Good Key Be honest about your frustration.
Share your thoughts and ideas with your spouse.
Clarify that you don't expect him or her to solve your problem, but that you just want to tell how the situation is.
When needed you might also add that you don't want to discuss it in greater detail, but you should give your partner a fair chance to ask questions.
But sometimes time is the best healer in certain problems.
But sharing the problem will make your spouse more accepting when you need an extra hour to walk the dog or when you take a long drive into the forest to meditate on your problem.
Share yourselves and increase your chances of staying together.
That is far more important than merely having physical sexual relationships.