1. Pisces.
Like their fish counterpart, people born under the Pisces sign know how to go with the flow. This flexibility, along with their dependability, compassion, and romantic leanings, make for a great marriage. Pisces make amazing partners who, once committed, are connected for life. Selfless and always willing to help others, the biggest risk of divorce for this sign is the tendency to let people take advantage of their good nature.