The Philippines remains one of the few jurisdictions in the world where "crimes against chastity" are still governed by a penal code dating back to 1930. Under the Revised Penal Code (RPC), marital infidelity is not a single crime; rather, it is divided into two distinct offenses based on the gender of the spouse: Adultery for wives and Concubinage for husbands.
Here is a comprehensive legal breakdown of these offenses, their elements, and the practical realities of prosecuting them in a Philippine court.
1. Adultery (Article 333, RPC)
Adultery is committed by any married woman who has sexual intercourse with a man not her husband, and by the man who has carnal knowledge of her knowing her to be married.
Elements:
- The woman is legally married.
- She has sexual intercourse with a man other than her husband.
- Regarding the paramour: He must know she is married at the time of the act.
Key Characteristics:
- A Single Act is Enough: Unlike concubinage, a single instance of sexual intercourse is sufficient to constitute the crime of adultery.
- The Paramour's Liability: The man involved is prosecuted as a co-principal. If he didn't know the woman was married, he may be acquitted, while the wife is still convicted.
2. Concubinage (Article 334, RPC)
Concubinage is committed by a husband who keeps a mistress in the conjugal dwelling, or has sexual intercourse under scandalous circumstances, or cohabits with her in any other place.
Elements (Any one of these three):
- Keeping a mistress in the conjugal dwelling: Bringing the woman into the home he shares with his legal wife.
- Sexual intercourse under scandalous circumstances: The relationship is so public or offensive that it causes a stir or "scandal" in the community.
- Cohabitation: Living together as husband and wife in any other place (e.g., an apartment or "love nest").
Key Characteristics:
- Higher Burden of Proof: Unlike adultery, merely proving a husband had sex with another woman is not enough for a conviction. The prosecution must prove one of the three specific conditions mentioned above.
- The Concubine's Liability: The mistress is only liable for Desierro (banishment), not imprisonment.
3. Comparison of Penalties
The law is often criticized for being "gender-biased" because the penalties and requirements for conviction differ significantly.
| Feature | Adultery (Wife) | Concubinage (Husband) |
|---|---|---|
| Penalty for Spouse | Prision Correccional (2 years, 4 months to 6 years) | Prision Correccional in its minimum/medium periods (6 months to 4 years) |
| Penalty for Partner | Same as the wife | Destierro (Banishment from a 25km radius) |
| Requirement | A single act of sex | Specific conditions (Cohabitation, etc.) |
4. Evidence and Prosecution
Proving infidelity in court is notoriously difficult because sexual acts are rarely performed in public.
Types of Evidence:
Direct Evidence: Eyewitness testimony of the act (rare).
Circumstantial Evidence: The "Rule of Probability." Courts look for a "concurrence of circumstances" that lead to a logical conclusion of guilt. This includes:
Love letters or intimate text messages/emails.
Photographs or videos showing intimate behavior.
Testimony from neighbors or building security about cohabitation.
Birth certificates of children sired with the paramour.
Private Detectives: Often hired to document "comings and goings" to prove cohabitation.
Who Can File?
Only the offended spouse can file the complaint. Both the guilty spouse and the paramour/concubine must be included in the same complaint (they cannot be sued separately unless one is dead or at large).
5. Common Defenses and Bars to Prosecution
Pardon and Consent: If the offended spouse has consented to the infidelity or has expressly or impliedly pardoned the guilty spouse, the criminal action is barred.
Example: If a husband knows his wife has a lover and continues to live with her or accepts gifts from the lover, this may be seen as "implied pardon."
Affidavit of Desistance: If the complainant withdraws the case, it usually leads to dismissal, though the state technically owns the prosecution.
Death: The death of either the accused or the complainant during the trial terminates the criminal liability.
6. The Psychological Violence Alternative
Because Concubinage is so hard to prove, many legal practitioners now advise wives to file under Republic Act 9262 (Anti-Violence Against Women and Their Children Act).
The Supreme Court has ruled that a husband’s infidelity can cause psychological violence and emotional anguish to the wife. Filing under RA 9262 is often preferred because:
- The penalty can be higher.
- The burden of proof focuses on the effect (mental anguish) rather than the physical act of "scandalous" sex.
- The court can issue a Protection Order immediately.
Looking Ahead
There are ongoing legislative efforts to repeal these articles in favor of a gender-neutral crime called "Marital Infidelity." However, until the Revised Penal Code is amended, the distinction between Adultery and Concubinage remains the law of the land.
Would you like me to draft a sample demand letter or a legal memorandum regarding the specific evidentiary requirements for a "scandalous circumstances" claim?