Am married to my husband in New York City for 23 years. We’ve lived apart for 22 of those years. We do not have a legal separation agreement. We file our taxes separately. We have a 23-year-old son. I do not have assets, just debt. I recently came into a financial windfall, is he entitled to half of this money? Can I go to a lawyer to have a postnuptial agreement that will award him some money but nowhere near what he would get if we went to court? If he accepts this agreement, can I also stipulate that he has no claim to anything else from me or whatever I may give to our son? He’s not a bad guy, just a deadbeat. He supported my son for the 1st 15 years of his life. That money went to education only. I assumed all other responsibilities.