Rights of wife in case of husband's adultery

My name is Julia, I am a Muslim. I am married for 7 years already. We have two little children.

Recently, my husband, he is a Muslim, admitted to me that he used to have a relationship behind my back for more than a year. This relationship is over. But at the same time, he allows himself to spend time with other girls.

And now he's talking about divorce, but not by law. Said to collect my things, take the kids and go home.

I need advice, someone can help me? What should I do?