In the Philippines, the marriage bond is protected not only by civil statutes but also by the penal system. While many modern jurisdictions have relegated "cheating" to the realm of civil suits or divorce proceedings, the Philippine Revised Penal Code (RPC) treats marital infidelity as a criminal offense. However, the law does not view the infidelity of a husband and a wife through the same lens, maintaining a traditional—and often criticized—distinction between Adultery and Concubinage.
1. Adultery: The Offense of the Wife
Under Article 333 of the Revised Penal Code, 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.
Key Elements:
- The Woman is Married: The marriage must be valid or at least voidable (not yet annulled).
- Sexual Intercourse: A single act of sexual intercourse is sufficient to constitute the crime.
- Knowledge (for the Paramour): The man involved must know the woman is married at the time of the act.
Penalties:
The guilty parties face prision correccional in its medium and maximum periods (typically 2 years, 4 months, and 1 day to 6 years).
2. Concubinage: The Offense of the Husband
Under Article 334 of the Revised Penal Code, a married man commits concubinage not merely by having sex with another woman, but by meeting specific "scandalous" or "permanent" criteria.
The Three Ways to Commit Concubinage:
A husband is liable only if he:
- Keeps a mistress in the conjugal dwelling;
- Has sexual intercourse with her under scandalous circumstances; or
- Cohabits with her in any other place.
Note: Unlike adultery, a single "one-night stand" by a husband in a hotel does not usually constitute concubinage unless it meets the high bar of "scandalous circumstances" or "cohabitation."
Penalties:
- For the Husband: Prision correccional in its minimum and medium periods (6 months and 1 day to 4 years and 2 months).
- For the Concubine: The penalty is destierro (banishment), which prohibits her from entering a specific radius (25km to 250km) of a designated place for a specific period.
3. Comparative Analysis: The Gender Gap
The disparity between these two crimes is a frequent subject of legal debate and calls for reform, as the burden of proof for concubinage is significantly higher than for adultery.
| Feature | Adultery (Wife) | Concubinage (Husband) |
|---|---|---|
| Required Acts | A single act of sexual intercourse. | Cohabitation, keeping her in the home, or scandalous sex. |
| Difficulty of Proof | Lower; any evidence of sex suffices. | Higher; must prove living arrangements or "scandal." |
| Primary Penalty | 2y 4m 1d to 6y imprisonment. | 6m 1d to 4y 2m imprisonment. |
| Paramour's Penalty | Same as the wife (Imprisonment). | Banishment (Destierro) only. |
4. Procedural Rules and Prosecuting the Case
The prosecution of these crimes is subject to strict procedural requirements under the Rules of Court and the RPC:
- Private Crime: These are "private crimes," meaning they can only be prosecuted upon a complaint filed by the offended spouse.
- The "All or Nothing" Rule: The offended spouse must include both the guilty spouse and the paramour/concubine in the complaint, if both are alive. One cannot be sued without the other.
- Pardon and Consent: The case cannot be filed if the offended spouse has consented to the infidelity or has pardoned the offenders (either expressly or impliedly, such as by continuing to live together after discovery).
- Evidence: Since direct evidence of sexual intercourse is rare, the courts often rely on circumstantial evidence—such as love letters, shared hotel rooms, witnesses to public displays of affection, or the birth of a child to the paramour.
5. Alternative Legal Avenues
Because criminal cases for adultery and concubinage require proof beyond reasonable doubt, many spouses opt for civil or administrative remedies:
Psychological Violence (R.A. 9262)
Under the Anti-Violence Against Women and Their Children Act, marital infidelity can be classified as a form of psychological violence. This allows wives to seek Protection Orders or file criminal charges for the mental anguish caused by the husband’s infidelity, which often carries stiffer penalties than concubinage.
Psychological Incapacity (Article 36, Family Code)
While infidelity itself is not a direct ground for the nullity of marriage, "pervasive and habitual" infidelity is frequently used as a symptomatic manifestation of Psychological Incapacity, allowing the marriage to be declared void ab initio.
Legal Separation
Infidelity is a valid ground for Legal Separation. While this does not dissolve the marriage bond (the parties cannot remarry), it allows for the separation of "bed and board" and the dissolution of the absolute community or conjugal partnership of gains.
6. The Future of Infidelity Laws
There is a growing movement in the Philippine legislature to repeal Articles 333 and 334 in favor of a gender-neutral crime called "Marital Infidelity." Proponents argue that the current laws are vestiges of a patriarchal Spanish colonial past that unfairly penalize women and provide a "higher threshold" for men to be held accountable. Until such legislation passes, however, the distinct definitions and disparate penalties of the Revised Penal Code remain the law of the land.