My husband asked for a divorce


We’ve had a tough two years with fertility. Miscarriage, hope, let down. Fertility treatments really got in the way of our marriage. He brought up divorce back in July but we agreed to work on It. I did but he really didn’t. Two weeks ago he said it’s done and wants a divorce. 4 days after telling me he wants a divorce he starts talking to a girl. They weren’t talking prior to him telling me he wants a divorce. He still has yet to file. He doesn’t talk about his feelings and he doesn’t really confide in anyone about stuff. It’s like he’s self destructing. I’m so lost and sad, we were together for 10 years and married for almost 4 years.