Karlos, as you are seemingly a lawyer, you are naturally particularly wary of breaching the criminal law, as it could cost you your career.
But I think it is important to look at things from an ethical point of view. For instance driving at 72 miles per hour on the motorway is a breach of the criminal law. Many people do it every day with no adverse impact on anyone, and there is no social stigma attached to it. Having a secret second family with another woman, and leaving all your worldy goods to your second family when you die, is perfectly legal, but very nasty. Much more unethical than driving slighly over the speed limit. It is quite possible to ruin somebody else's life, quite deliberately, without doing anything that would attract the attention of the police. Why expect people to disapprove of something more just because it has been classified as a criminal offence?