As per valmikione version of Ramayana , bengali version kritiiwasi ramayana , hanuman has only one son magardwaja. It is when lord hanuman was returning after burning Lanka, he tried to clean his face with water of sea and the drops were drunk by fish and son of hanuman born.
There are no other son of hanuman. This story is humbalk story. Lord hanuman was brahmachari. He did not fell in love with anybody except lord rama. Lord hanuman was dedicated devotee of lord rama.