what characteristic or a behavior must a person have for you to marry them?

It may takes awhile to marry someone that you hardly know. Some people fall in love fast and get married right away. When they get married they start having rules of things they have to do and about there marriage. Getting marriage at a young age seem to early for some couples that get married because theres alot of stuff ahead of them that they would want to do. Also couples change when there married after awhile like there attitude change.