Indian Air Force — betrayed a girl

Sir
I am student.. I met a guy in my coaching (Working as cpl in indian air force). We became good frndz and continued with relationship.. At that tym we get many time physical many time.. Now i came to know that he is married and he is a father of one child... What should i do.. He betrayed me. He told me that the girl with whom he is leaving is his cousin... Bt now after seen some photograph i came to know she is his wife. Plz help me what should i do.. Bcoz still i have not told this all things to my parents and family.. I dnt want to hurt them bcoz of him... Please i need your help. I want him to be get punished..