If he has been legally charged and it gets in front of a judge this should not even be up for discussion . If he has ju s t admitted this to the mother of his child with no legal ramifications it's up to that mom to keep her child safe.. Honestly would never allow even a supervised visit. If it goes to court and he is able to get supervised visits I would comply with the courts order in a restaurant with him as far from my child as i could, big tables between them.