You can file a Petition for Legal Separation on the ground of Sexual Infidelity(Art.55 Family Code). However, the prescriptive period for this action is within 5 years from the occurrence of the cause (occurrence NOT discovery). Meaning you approximately have until 2017 to bring the action under the Family Code (if sexual infidelity could have occurred 2012). The effects of this action is that you will live separately, Absolute Community of Property or Conjugal Partnership of Gains will be dissolved (Yung asawa mo ay walang share sa net profits earned), CUSTODY OF MINOR CHILDREN IS AWARDED TO THE INNOCENT SPOUSE(meaning sayo ang bata, and surely will kase ikaw ang wife), offending spouse is disqualified to inherit from innocent spouse by intestate succession, provisions in will of innocent spouse which favors offending spouse shall be revoked by operation of law, Innocent spouse may revoke donations he/she made in favor of offending spouse,Innocent spouse may revoke designation of offending spouse as beneficiary in any insurance policy (even when stipulated as irrevocable).