My husband and I got divorced and are looking at re-marrying. If we remarry, does the divorce and custody agreements void?

Child Support can become very complex.  If you are living together and he is paying expenses, then he should not have to pay child support even at this time.  I would recommend you get married again, enjoy each other and your children together.  That's more important for your children.  You can enter into an agreement making all the agreements in your divorce void and unenforceable.  Just make sure that you can take care of California Child Support Services requirements if California Child Support Services is involved.  I wish you the best