Life is all about good and bad experiences. These experiences are required for you to evolve as a mature experienced human being capable of making right decisions at the right time. Some people take it upon themselves to expose wrong doing by others. Any such fight may end up in court wasting each other’s valuable time. Is it worth it ? Truth might remain hidden for some time but ultimately truth prevails. People will know it if he has done something shady. Don’t take it upon you to expose others and try to improve them. Only thing you can do is to improve yourself , learn lessons and progress in life. Trust you have built with others will make your life journey smoother.