P.s.--sorry for my bad english

same thing happen to my friend, his mother cheated with his father when he is 12 they got divorce afterwards he stayed with his father and his sister stayed with his motherand he never talked to his mother for the next 12 years. He is 23 now and what changes that his girlfriend was the one that ended up putting them together. when he told me his story his words were " i hate my mother for destroying my father but i still loved her at that time. its just that if I had shown any affection towards her that means i forgive her but i cant do this before my father forgive her which i knew at that time is not possible coz i was only 12 years old and i cant tell him to do that for my sake and also i was angry at that time."

i think that you are doing a right thing its just that he is a boy and secondly he is a teenager. so these thinks will not be easy. but i do hope that everything will turn out fine.