Thanks for the update. I'm glad you clarified your answer. Clearly my assumptions were wrong!
There is no need for a separation agreement if you are not married. Since you and your partner have no legal relationship, whatever property is titled in your name is XXXXX XXXXX the other person's his or hers, etc.
If you own things together, you will have to figure out how to divide that up. Again, you do not have to do this via some sort of formal agreement. Just figure out who gets what, or sell it and split the cost in a way you think is fair.
However, since you have a child together, you will need some sort of agreement or court order on child support
, who has primary physical custody, and who gets visitation and when. Also, you'll need to consider medical expenses, schooling, etc.
I found several forms you can use from NY State Courts
has several forms you can use for child support issues.This page
has several forms you can use for custody and visitation issues.
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