I believe he is under no legal or moral obligation to do anything other than what he has done. It appears he gave a large sum to the mom, then paid the mom every month, paid yearly large sums, paid other extra amounts, then set up a trust that paid the young lady a large sum on her 22,24,26 and 28th birthdays. If he did all of that, it seems to me he has met his obligation. Ill leave moral judgements for all of those in here that have probably been married a time or two and got kids with a few different woman that live in that large glass house to judge him.