Well that depends...\n\nAre you 100% sure that he's definitely the father? \nWhat does HE think about the situation?\nIs access to his kid a major issue for him?\nWhat's his relationship with the mother like?\n\nVery simply - he should do anything he can to resolve matters in a fair way, agreeable to both parties for the sake of the child.\n\nIf that is impossible for whatever reason, then he needs to make sure he's got very good legal advice.