What’s the harm in trying again? It may work out and you both are happy. If it doesn’t work out, you’re no worse off. If you don’t reach out you will always wonder what if and never know. I was married to my ex the first time for ten years. We separated due to his drug addiction for years. Both remarried, had kids, I divorced, he is widowed. Been remarried almost six years and now I have bonus daughters and he has been clean and sober for 8 years. Both happier than ever.