1. You will not gain any thing by sending him to jail now but he also shall have to be made understood that he will not go scott free,
2. He may refuse to pay your maintenance since you have become an adult,
3. Your mother can file a divorce petition on te ground of cruelty and claim for her and your brother's maintenance,
4. She can also mutually settle for a compensatory amount for giving him divorce informing hgim that if he does not agree to pay the compensation, his adulterous activities will be brought before the Court for which he will go behind the bars.