1. Generally speaking, cheating in marriage is not against the law, but belongs to the moral category. This violates the basic principle of marital loyalty. 2. A spouse cohabits with others in the name of husband and wife, and people around him also think that it constitutes bigamy; Those who commit the above acts knowing that others have spouses also constitute bigamy and will be investigated for criminal responsibility. It is illegal to cheat in marriage if it constitutes bigamy; 3. Bigamy refers to the act of marrying someone with a spouse or knowing that someone else has a spouse. The so-called spouse means that a man has a wife and a woman has a husband. This relationship between husband and wife still exists without legal procedures, that is, a person with a spouse; If the relationship between husband and wife has been dissolved, or the relationship between husband and wife naturally disappears due to the death of one of the spouses, it is no longer a spouse. The evidence to prove the cheating is as follows: 1, letter of guarantee, letter of apology, the fact of cheating was suddenly exposed, and one party wrote a letter of guarantee in despair to express remorse, which is the key evidence of the other party's cheating; 2. If the other party is a prostitute, there will usually be police intervention, and the police transcript can be used as evidence; 3. After the unit verifies the employee's extramarital affairs, it will sometimes deal with their life style problems; 4. Letters, text messages, emails, etc. The exchange between the two parties, in addition to written evidence, should be notarized and submitted to the court; 5. Capture more than ordinary friends' behaviors, and collect evidence by taking photos and videos; 6. Direct on-site evidence collection: the derailed party directly catches the derailed person in bed, or directly bumps into the derailed party and the derailed object in other public places; 7. Video and audio evidence. For example, when the derailed party is with the derailed object, the parties themselves secretly record or entrust others to secretly record the recorded materials. Photos of the derailed party and the derailed object being too close in public, and photos and videos of the behavior of both parties entering the same room together.
legal ground
Criminal law of the people's Republic of China
Article 258 Whoever commits bigamy while having a spouse, or marries while knowing that others have a spouse, shall be sentenced to fixed-term imprisonment of not more than two years or criminal detention.
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