Both spouses should be as concerned with the welfare of each other as they are with themselves. Though unexpected events, such as death of a family member or loss of a job, happen to everyone, these events should not be used as an excuse to ignore one's commitment to their marriage. Committed couples who deal with unexpected problems together actually strengthen their marital bonds. These aren't the only situations, but they are ones we see a lot. Workaholics use work as an excuse to avoid conversation and intimacy with their spouse.
Abusers use threats and violence to make sure they always get what they want.
Internet junkies shut their spouses out by talking to strangers about marital problems. If you notice yourself in these scenarios, it's time to recommit yourself to your marriage. Once again, the key is communication. Couples need to discuss their priorities and their expectations, and what they hope to achieve in the future. And they should do this not just on their honeymoon, but throughout their marriage.