Child support is the other parents half of the expenses your child costs each month. You pay the other half. What you do in your private life, sleep with etc, can not change the fact that each parent have to pay for their child. He has an obligation to pay for his child just like you do so the child support goes to the one who has custody for the child. The court do not care about that you had an affair and will not let your child lose 50% of his/hers financial support because of it. Whether to pay or not is not up to the parents.
no
In general, child support obligations are imposed on absent parents.
In general, child support is a percentage of net income, so it's unlikely that the State will increase your support when you lose your job.
Doubtful. The child support is for the welfare of the child, not the mother. Check with your state child support office for specifics of the law in your state.
Paying child support will not cause the father to lose his parental rights - neither will not paying child support.
No.
no
Of whom?
Maybe, if the affair involves cohabitation or some other form of significant financial support. Spousal support is typically limited to the time required for the ex-spouse to become self-supporting.
No, it will have no effect.
no
Yes, but she can wait up to 18 years to file for retroactive child support. see related question