13. Divorce
(1) Any marriage solemnized, whether before or after the commencement of this Act, may, on a petition presented by either the husband or the wife, be dissolved by decree of divorce on the ground that the other party-
(i) [has after the solemnized of the marriage, had voluntary s*xual inter course with any person other than his or her spouse; or
(ia) has, after the solemnization of the marriage, treated the petitioner with cruelty ;or
(ib) has deserted the petitioner for a continuous period of not less than two years immediately preceding the presentation of the petition; or,]