To dream of eloping is unfavorable. To the married, it denotes that you hold places which you are unworthy to fill, and if your ways are not rectified your reputation will be at stake. To the unmarried, it foretells disappointments in love and the unfaithfulness of men.
To dream that your lover has eloped with some one else, denotes his or her unfaithfulness.
To dream of your friend eloping with one whom you do not approve, denotes that you will soon hear of them contracting a disagreeable marriage.
Gustavus Miller's Book of Dreams