Respectfully request advice as newly divorced dad

I used to make mine sign a receipt.She didn't like it but you have to cover your butt. As far as her paying debt back I wouldn't count on it,if she don't have to she wont( but i don't know her,i am going by what usually happens) thing is, if you give her cash for ,say two years,and she takes you for back support, at least you will look upstanding in front of the judge. If you think the money you give her will go toward the child that is a good thing even if you end up paying back support. Its when you give them money and the child does without that you have to avoid. Sorry ifi sound negative. be there for your kid,and let the chips fall where they may with the ex. This is the best I got. Ive been through it, and somehow ended up in my sons life, I dont talk to the ex much. I saw her at HS, College graduation and we were civil to each other. Next time will be his wedding and that will be it. I did pay her faithfully up until my son turned 18,out of court ,then supported him directly through college.