Atheists, do you believe that absolute moral laws exist?

There are no absolute moral laws...only societal laws, and all societies change over the years. The moral laws change with them, we no longer believe in slavery, we now believe that women have equal rights. This are all morals that have changed. Go back to the time of early christianity, morally it was ok to have many wifes, nowadays it's not ok. So there are no moral absolutes...only what the society at the time considers to be moral.