Firstly, Lets know what is sexual harassment.

Sexual harassment is refers to a wider variety of inappropriate sexual behaviours. Sexual harassment can include sexual contact – like unwanted touching, hugging, or kissing.and other verbal or physical conduct of a sexual nature when either:
The conduct is made a condition of a person’s employment, education, living environment or participation in the University community.
Indian government’s regulations to prevent sexual harassment of women.

The offences of sexual harassment under the Indian Penal Code 1960 and the corresponding penalties: section 345A to section 345D and section 509 describe sexual harassment and its form. Unwanted physical touching and advances, including unwanted and explicit sexual advances, requesting or asking for sexual favours, showing sexual images or pornography without the person’s consent and unwelcome sexual remarks are categorised as sexual harassment.
The Government of India has enacted a law for the protection against sexual harassment of women at the workplace and for the prevention and redressal of complaints of sexual harassment and for related matters. The Act may be cited as The Sexual Harassment at Workplace (Prevention, Prohibition, Redressal) Act, 2013.

When someone is falsely accused then it not only affects his career, social life, mental health, and legal background. At these moments don’t panic and try to resolve this matter outside the court but so stand up against them. They are on the wrong side and they shouldn’t threaten you. If possible, try to talk to your wife about this matter. After that, try to consult a good criminal lawyer as a backup.