There are many different reasons for wearing a promise ring. You can get male promise rings and female promise rings. They are given as a pre engagement sign. They can also symbolize an abstinence vow until marriage. For instance parents can give their children these rings if they want their children to remain abstinent until marriage. They can also be given to a friend to represent an ever lasting bond of friendship. Primarily the main reason they are given is to let your partner know you are progressing up the relationship ladder.