Sorry to hear all this, If you recollect that I had said that the horoscope of the boy was not good despite 28 guna milan due diligence is required. 28 Guna milan score does not indicate marital happiness unless supported by the planets. In the horoscope of the boy the marital happiness is not there, therefore all these problems have risen. You told me that there is a known person in between who knows the boy and his family, take him into confidence. Forget about 2nd marriage now and focus on solving this if possible. Elders from both families should sit and try to solve the misunderstanding if any.
Blessings,
Navneet Khanna
Astrologer