Help! He wants a divorce and I’m lost

My husband and I have been together for 12 years (8 married) we have two small children together. He wants a divorce. How did y’all do it? How do you start over? How do o explain to my kids that we still love each other but we just can’t live under the same roof? I have no family here so I do I start over as I’ve been a stay at home mom for years! I’m broken, hurt and feel like I’m going to explode into a million pieces. HELP!