Is your original contract with them a legal, binding contract that was filed with the court? If not, you may have some trouble. How long has your son "temporaily" been living with them?
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I am not a lawyer.
I am the mother of an 8 year old girl. Since she was 3 years old, she has been in the custody of her father. I gave him custody at that time due to my financial situation. I pay child support on time and have since she moved. I have visitation rights (I live in another state) which include 3...