No one seeks out bad relationships. But if you enter a marriage with a spouse who has an addiction, you are signing up for one rocky ride. Problems with alcohol, drugs, gambling and sex are very serious. Many people will mask these behaviors prior to marriage, so pay very close attention while you are dating for any addiction patterns. If you note any suspicious behaviors, talk to your dating partner and seek help immediately. A marriage in which one or both partners suffers an addiction is less likely to succeed.