In the Philippine legal system, the sanctity of marriage is protected by both the Family Code and the Revised Penal Code. When a third party (often referred to as a "mistress") enters the picture, the aggrieved spouse has specific legal avenues to seek justice. While the primary focus is often on the husband, the law provides mechanisms to hold the third party equally or independently accountable.
1. Criminal Action: Concubinage (Art. 334, RPC)
Under Article 334 of the Revised Penal Code, a husband can be charged with concubinage if he commits any of the following:
- Keeping a mistress in the conjugal dwelling.
- Having sexual intercourse under scandalous circumstances.
- Cohabiting with her in any other place.
Liability of the Mistress
The mistress is not exempt from criminal prosecution. If she is aware that the man is married, she can be charged as a co-defendant in the case for concubinage.
- Penalty for the Mistress: Unlike the husband (who faces prision correccional), the mistress is meted the penalty of destierro.
- What is Destierro? This is a unique penalty where the convict is prohibited from entering a designated radius (typically 25 to 250 kilometers) of a specific place, such as the residence of the aggrieved spouse, for a period ranging from 6 months and 1 day to 6 years.
Burden of Proof
Concubinage is notoriously difficult to prove compared to Adultery (the crime charged against a wife and her lover). The prosecution must prove "cohabitation" or "scandalous circumstances," which requires more than just evidence of a one-night stand or a casual affair.
2. Criminal Action: Slander (Oral Defamation)
If the mistress publicly insults, belittles, or spreads malicious rumors about the legitimate spouse, she can be sued for Slander under Articles 358 of the Revised Penal Code.
- Simple Slander: Oral defamation that does not seriously insult the victim.
- Grave Slander: When the insults are of a serious nature, taking into account the social standing of the parties and the specific circumstances of the case (e.g., shouting insults at the spouse’s workplace or in front of their children).
Elements of Slander:
- There must be an allegation of a crime, vice, or defect (real or imaginary).
- The allegation must be made orally.
- It must be public (heard by a third person).
- It must be malicious.
- It must be directed at the spouse.
3. Civil Action: Damages (Art. 26 and Art. 2219, Civil Code)
Even if a criminal case is not filed or is difficult to prove, the spouse can file a Civil Case for Damages. The Civil Code of the Philippines offers a broader net for holding a mistress accountable for the emotional and social wreckage caused by the affair.
Breach of Privacy and Peace of Mind (Article 26)
Article 26 of the Civil Code mandates that every person shall respect the dignity, personality, privacy, and peace of mind of their neighbors and other persons. It specifically mentions:
"Meddling with or disturbing the private life or family relations of another"
A mistress who actively pursues a married man or flaunts the affair can be sued for damages under this provision for disturbing the family's peace.
Moral Damages (Article 2219)
The aggrieved spouse can claim moral damages (for mental anguish, wounded feelings, and social humiliation) in cases of:
- Libel, slander, or any other form of defamation.
- Acts referred to in Article 26.
- Adultery or concubinage.
4. Administrative Action (If Applicable)
If the mistress is a government employee, the spouse may file an administrative complaint with the Civil Service Commission (CSC) or the specific agency where she works.
- Grounds: "Disgraceful and Immoral Conduct."
- Penalty: This can lead to suspension or dismissal from service, which is often a swifter and more impactful consequence than a long-running criminal trial.
Important Considerations
| Factor | Description |
|---|---|
| The "Pardon" Rule | Under Art. 344 of the RPC, if the aggrieved spouse has consented to the affair or pardoned the parties, the criminal action for concubinage cannot proceed. |
| Evidence | Photos, videos, travel records, birth certificates (if there are illegitimate children), and credible witness testimonies are vital. |
| VAWC (RA 9262) | In some instances, the affair itself can be classified as Psychological Violence under the Anti-Violence Against Women and Their Children Act, though the primary respondent there is the husband. |
Summary of Penalties
While the mistress may not face "prison" time for concubinage (due to the destierro penalty), the combination of criminal records, public banishment, and heavy civil indemnities serves as the legal deterrent against third-party interference in Philippine marriages.