If you already are in good terms and deeply respect each other, I am sure it can work.
Test the waters and find out what you can share and what you can't.
If you want to bring new men in your life, it's important NOT to see your ex or communicate with him too much.
I would say one drink a week, a couple text messages max, that kind of thing.
If you invest too much energy in your ex, it will keep your life totally polarized on him and not free enough space for new relationships.
GOT THAT?! This is essential to understand!