Marriage can be hard work at times especially if both people work and there is not enough time for them to spend together. Sometimes in a marriage, they can strive to achieve own independence and happiness, but they can forget to work on the actual relationship.
Lack of sex and intimacy can cause a strain or have a negative impact because, without any romance, there is no passion in a marriage. On the other hand, sexless marriages are not necessarily unheard of, and many marriages go on for decades without sex. Some problems include feelings of abandonment, resentment, extramarital affairs, stress, jealousy, lack of intimacy, insecurity, sets a bad example for children, separation, and sexual dysfunction.